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Archive for the ‘Church Sound Systems’ Category

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What costs more? Drum Booth or Fixing a Sanctuary?

Posted by jdbsound on June 10, 2020

What costs more?  Or, what will give you the most bang for the buck?  Did you know that for less than the cost of a fully enclosed drum booth, you can fix all of the acoustical issues of a typical sanctuary?

Here is a typical drum booth churches are buying.  This booth retails for $4,300.00 and is often on sale for $3,000.00 plus shipping.

Here are all of the sound problems the drum booth solved. Keeps the drums out of the mix and the people in the front of the church have less noise from the drum kit. The downside to all of this is that often, the drummer plays louder which leads to many getting tennis elbow, and hearing damage often occurs.  There is one extra cost to include.  Often drummers need headsets or floor monitors to hear everyone else on stage.  What is often overlooked is that churches should have the drummer sign a liability waiver that the drummer will not sue the church for premature hearing loss and permanent damage to their arms due to tennis elbow.  Drummers often have to play louder in order to hear themselves inside a drum booth or shield.

 

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Here is an example of a modest church that decided to fix the worship space instead of getting a drum shield or booth.  The material costs including the paint were $1,000.00.  Three people over 3 Saturdays completed the installation.  If you look carefully at the photo below, six months later, and there is no drum booth around the drummer.  They don’t need one anymore.

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The following is a list of the planned sound issues solved:

  1. No more standing waves
  2. No more deadspots or hotspots
  3. Eliminate flutter echoes often heard off the back walls on stage.
  4. No more excessive bass

Bonus fixes included and no extra cost:

  1. Better speech intelligibility
  2.  Increases the signal to noise ratio to 21dB throughout the room
  3. Most of the floor monitor spill was gone
  4. Less sound system distortion
  5. No more bass distortion
  6. Equalized the room to remove excess energy at 400 Hertz -20dB
  7. Went from 18 inches to 38 inches of before feedback,
  8. The room is +/- 1.5dB throughout the room
  9. Makes the room easier for the musicians to perform
  10. Improved sound for people with hearing aids
  11. Before about 15% of the congregation was singing, now its around 60% after 4 months
  12. The sound team is having an easier time mixing.
  13. No drum shield of any kind
  14. Drummers are playing quieter without being asked to.
  15. The drummer can hear everyone on stage with minimum floor monitor support
  16. The pastor is less fatigued after preaching
  17. No more sound complaints if the sound is too loud
  18. The sound system sounds so much better
  19. The bass from the sound system is much more dynamic
  20. The bass from the bass guitar is cleaner and not overpowering any of the other instruments

These are all of the comments various church members, musicians, and the sound team shared after the first 4 months of the acoustical changes.  All they were hoping for was less bass drowning out everyone on stage, to eliminate hotspots and deadspots in the audience area and on stage, and to stop the loud reflections off the back wall affecting the musicians and the pastor when preaching.  The diffusers gave them 23 improvements instead of just three of them.  There is no other custom or “off the shelf” acoustical system that can do all of that in one step unless you have unlimited cash at 30 times the cost.

Drum Shield or Fixing a worship space.  For the cost of a drum booth, you can fix a church up to 800 seating with some sweat equity.

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Hot Spots in Worship Spaces

Posted by jdbsound on May 25, 2020

Hotspots and Deadspots are sound effects most often created by unmanaged room reflections that are out of synchronization with direct sounds from a pulpit or preaching position, and made worse when the wrong sound system design is used.

To learn more of what you can do about it, read this article.

In case you don’t know this, sound systems cannot eliminate deadspots if it is created by the room in the first place. Adding more speakers will degrade the overall performance of the sound system, including making other areas of the worship space harder to hear clear sound.

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Church Sound. It’s all about cause and effect.

Posted by jdbsound on May 20, 2020

Sound system design has nothing to do with the equipment you use. It is about the location of speakers used to broadcast into a room and the interaction of the room onto the speaker system design.  It doesn’t matter if you are using line arrays or point and shoot speakers if the speakers are placing in the wrong position; both types of speakers will have the same limitations.  It is all about cause and effect.  A sound engineer needs detailed knowledge, understanding, experience, and wisdom in knowing room acoustics or know enough to ask help from an acoustician to understand when to use which system.  The room will tell you where the best places are to put speakers. 

The room will tell you when to use one of the following techniques. :

  • Distributed Sound System
  • Central Cluster or single speaker system
  • Left Center Right system or cluster
  • Left Right System
  • Live Stereo Hybrid System
  • Hybrid Distributed Sound System

The geometry, reverberation, surface materials, acoustical management system, and room volume all have to be accounted for before creating a sound system design profile.  After all of this is done, you can start to determine the size of the sound system needed. 

If you think you need to do some acoustic treatment or the church has already been treated, it should not be using the spot treatment method, which means placing a few panels on a wall or two.  Whenever you add something to one wall or any part of a wall, it affects the whole room.  This also includes the placement of screens, lighting, and other items related to multimedia.  Even room renovations change how a room sounds. It is all about cause and effect. The acoustics of a church must use a planned system that treats the whole room.

A spot fix is when enough panels are added to solve one problem.  In acoustics, when there is a problem, there are always other glitches than masked other difficulties that you can’t hear and often are not shown in acoustical measurements.  Here is an example: Placing sound absorbers on the front face of a balcony will get rid of an echo.  However, the added absorption often makes the mids and bass stronger, which usually makes speech and music sound muddier.   This then requires adding bass traps, which are expensive.  While you can use aggressive equalization to make the sound system better for speech, you will need a different equalization for music.  While these efforts can somewhat help with amplified sound as long as someone remembers to switch the EQ settings, the congregational singing is degraded until bass traps are added.  Add the bass traps.  It is all about cause and effect.

However, you may have noticed at after treating the front face of the balcony and adding the bass traps, there is now a softer echo off the back wall or the reflections off the side walls are much worse depending on the shape of the room.  Reflections off the side walls are detected when clapping from the front of the center stage.  Those reflections from the sides or back interfere with speech and music intelligibility.  It is all about cause and effect.  Change the EQ of the sound system.  Helps for speech, doesn’t help for music at all.  In spite of changes to the sound system, speech is worse in the back half of the room.  Add speakers to the back half of the room.  It helps people with good hearing and doesn’t help people with hearing aids.  Add a delay to the speakers.  People with hearing aids do better, but they are still no happy because someone is sitting in their spot where they know the sound is better. 

Should you apply something to the sidewalls, then the echo off the back wall becomes much more pronounced and interfering with hearing on stage.  Switch to in-ear monitors.  It’s all about cause and effect.

Now the drums are too loud. Add panels to the stage or get a drum shield that costs more than fixing all of the acoustical problems in one step.  With the drum shield in place, the drummer plays louder because they can’t hear themselves properly.  The insides of the drum enclosures are easily overloaded, making it harder for the drummer to hear all the different drums and cymbals.  After additional dampening to the drums, the drummer playing even louder, getting elbow and wrist injuries.  Sound is still bleeding through the shield, even after adding a roof to it.  Some churches have turned the drum shield into a self-contained room with air-conditioning as a permanent fixture on the stage.  It is all about cause and effect.

For the time being, congregational singing has become a chore for most, resulting in less than 20% of the audience singing.  To get people singing again, you pay singers and musician to lead the worship, and to keep the talent to stick with the music entertainment program.  This helps for a while, and before long, you are back to less than 20% of the audience singing.  Bring in larger screens, add lighting effects, and use lighting to help create a mode to encourage people to sing.  Again, this helps for a while, but participation drops back to 20% again.  These objects change the acoustics of the room, and everyone just puts up with the sound degradation.  It’s all about cause and effect.

In the meantime, the sound system has been replaced, church attendance is up, but fewer people come to prayer meetings or Bible studies.  Turn to home groups.  At first, home groups bring in more people, but as the church continues to grow, more people are slipping through the system and are not included in the home groups or any spiritual support.  Fewer people are growing as there is no alternative for mid-week meetings at the church.   The preaching is dynamic; the entertainment is awesome, fewer people are actively involved in the church, and more people become adherents with no real motivation to join, and become members, and learn more about their faith.  The church is full of Sunday worshipers unable to defend the Gospel, but they know and singing the choruses sung by the church all the time.  It is about being part of something that is free of guilt, responsibility, and not knowing what salvation really is about.  It’s all about cause and effect.

Wait a minute, what does any of this have to do with acoustics and sound system?  The sound system is just equipment and technology.  The room is just a set of walls, floor, and ceiling.  When empty, they do nothing.  When energized with sound, there is an immediate cause and effect that impacts on every part of the worship service.  Sound affects how people react to events in a church.  Consider how people respond to movies at a theatre.  When the sound is excellent, the audience will tell you how good the picture looks.  When the sound is poor, people don’t come back.  How much more does that impact a church?  Again, it’s all about cause and effect.

Next, check the acoustical condition of your church.  Have your church properly tested for all aspects of worship, not just the performance of the sound system and hardware.  Test for congregational singing.  Test for audience participation for prayer and testimonies from the seating area of your church.  Check for the signal to noise ratio on the stage and in the audience.  Check the frequency response of the room and ignore the reverberation time of there is more than a 20dB difference in the response of the worship space.  If your worship space passed, then you don’t need any help.  Your sound system is already working perfectly.  If you have any concerns or want better performance from your sound system, fix the room.  It’s all about cause and effect.

After the sound system and worship space has been upgraded, start mid-week Bible Studies at the church.  If people come to the church mid-week, the congregation will become stronger and healthier.  Congratulation, you have just successfully upgraded the sound of your church to meet all what a congregation needs.

The story you have just read happens in many churches.  It is based on the testimonies of hundreds of churches around the world.  If this doesn’t sound like your church, have your worship space tested anyway if it hasn’t ever been properly tested. The results can be a surprise or a blessing. 

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What happens when Technology, Science and Knowledge catches up with the Bible.

Posted by jdbsound on April 24, 2020

The Bible has a lot to say about how a modern church should be designed.  Solomon’s Temple was not just a house for God to dwell in, it was also meant to be a tool to help preach and spread the Gospel in the present.

After reading this article, please pass it on and make comments below.

***  Article: Gods Authority in Church Design ***

This article is the most comprehensive study of King Solomon’s Temple I have ever written.  If you believe John 1:3, then you know who really designed Solomon’s Temple.  King David only penned the details of the new temple.  King David told his son Solomon that it was the hand of God that guided his hand.  What was so important for God to design the temple rather than letting a man design in with whatever came into his thought?

This article gives a stronger case for what the “Inspired Word of God” means.

Winning people to Christ is not a game or something given to chance.  We need all the tools possible to have an impact on this world.  Jesus is Lord, and if your church is dedicated to God, Jesus is Lord over your church building too.

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Increasing the quality of Streaming Churches Messages from Home or office

Posted by jdbsound on April 22, 2020

With all of our churches closed, many have turned to YouTube or live-streaming of church messages. After listening to many of them, there is a sound quality issue I want to bring up. Many of the videos I have seen and heard, sound like there were recorded in a cave – a bad room. If you are limited in the quality of the room, perhaps you can use cardboard tubes to get the best sound quality out of your message. Adding carpet on the floor will quiet the room down, but often it makes the room bassy sounding. To balance that out, add the tubes on all the walls, as shown in the photo below.

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You don’t have to be as fancy as this, but getting the best clarity in your voice is important in communicating such an important message online.

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This is one of the cheapest ways to make the space you are working from to have a sound quality that most people are accustomed to hearing every day.  If you are like me, when the sound on my favorite shows is of poor quality, I switch to something else in the first 30 seconds.  Good sound is more important than a good picture.

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Stop Sharing your Toothbrush/Microphone

Posted by jdbsound on March 17, 2020

Back in 2006, I wrote this original article about how sharing microphones can pass on colds, flues and other illnesses. In 2009, the manufacturer, Point Source Audio asked to update the article to promote good microphone etiquette after the SARS in 2008. Now with Covid-19, this is another opportunity to educate people about how to better protect themselves from communicable infections.  Since Jan 12, 2020, thousands of people have read or downloaded the article.  I thought it was time to dust off the original post from 2006.

Here is a link to the original article. Personal Microphones as toothbrushes 2006
The footnotes are interesting. Here is an example. I can’t authenticate this clip, but it is a great story.

There was a story about Elvis when recording – all morning they did take after take, none sounded right. During lunch, someone pulled the windscreen off his special mic, rinsed it in the sink – to find a bunch of black junk coming out of it. Did that a few times, put it on a low-heat hair dryer, put it back on the mic. After lunch, Elvis “hit it” with just one take.
From Blake Engel, All Church Sound

*** UPDATE ***

I’ve mentioned on other posts about using plastic food wrap or balloons over microphone capsules and windscreens.  This idea only works great if the plastic is removed between the uses of a microphone.   Passing microphones around is not a good idea either.  If you can get a second mic, the better.

 

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How to Improve/Fix Congregational Singing Permanently

Posted by jdbsound on March 6, 2020

Congregational singing is perhaps the third most important part of worship.  Prayer and preaching of the Gospel come first and second.  In many church publications and websites, there are many articles about how to improve congregational singing.  When you say improve congregational singing, what are you truly asking for?  In almost every case, they are asking how to get more people singing.  And the theory is, the more people sing, the more they will be engaged. 

Here are some of those titles. 

  • 7 Tips To Encourage Singing in Your Church – Gavin Adams
  • Nine Reasons People Aren’t Singing in Worship
  • 12 Things to Avoid for Better Congregational Singing
  • Fifty Ways to Guarantee Poor Congregational Singing
  • How to improve congregational singing: 4 suggestions to …
  • A Simple Way to Improve Congregational Singing: Get Rid of the Carpet

There are many more.

The ideas recommended are extraordinary, and most of the time, they are putting the bulk of the blame on the church leaders, including the pastors and song leaders, this is so wrong.  The truth is, all of the recommendations outlined are the result, such as trying to put a square peg into a round hole.  There is a simple solution to all of this.  When you read the articles, what church leaders are doing is a direct result of compensating for poor acoustical conditions.  Choosing the right keys to sing in, choosing a better selection of songs, hiring professional singers, and performers, in the end, it only helps things slightly.  The thing is, what the audience keeps telling me is that when they are singing, they feel like they are singing alone, it creates a sense of loneliness.  People feel as if no matter how loud they were singing, their efforts have no contribution to the overall volume of the congregation.  When you can’t even hear yourself, most people just give up and don’t bother singing.  Some may just mouth the words.

Sure, there are times when we see people at a concert singing a particular song, and it sounds impressive, but the reality is, those people will not sing the whole show at that volume.  It is more about having an emotional high and nothing more.  It is doing something to capture a moment for personal gratification and bragging rights.  That is not worshiping in any sense of the word.

My take on how to get the congregation to sing is by first identifying the source of why people don’t sing in your church.  In 90% of the churches that I have helped solve their congregational singing issue, it has always been around one reason – acoustics.  Here is some background you should know.

This is a new church with diffusers built into the walls. The quality of this room is such that when this photo was taken, the congregation drowned out the Pipe Organ. The organist said he pulled all the stops and he could not hear the organ for some of the songs they sang. At one point he stopped playing. With a sound meter recorder at the pulpit, the congregation hit 105dB several times and no one complained that it was too loud.

The struggles of congregational singing started long before the sound system was invented.  It is my belief that Choirs were formed originally, because when Christians first started to worship in existing pagan temples, (after the edict of tolerance,) most likely, those temples had such poor acoustics that the congregations back then had the same problem of not hearing themselves.  Then some talented singers found that if they stood in a particular part of a room, they could hear themselves and create an awesome sound of choral singing within the pagan temple.  That talent was later included as part of the worship.  When Christians started to build churches, when the buildings were finished, they asked the better singers to go to the part of the worship space where their voices were effective in creating this big sound where a few people would sound like many.

In the end, as more and more churches were built, the choir became the focus of congregational singing, and even though the congregation was encouraged to sing, the choir was the focus, not the congregation.  This continued throughout church history in one form or another.  Sure, some large cathedrals have these amazing sound effects. (Sound effects do not support congregational singing or speech.) Still, in the end, it is the choir and the organ that dominated worship, not authentic worship singing or hearing the Gospel.

Throughout the Reformation period to today, churches have been experimenting with worship space designs to discover the Rosetta stone of church acoustics.  Churches have been trying to create a worship space without any acoustical planning.  It hasn’t happened yet that we know of and if there is a church out there that works, where is it?  Why would it be kept as a secret?    When the room helps the singing of the congregation, the congregation will sing, and they will sing as loud as they are inspired to.  The same properties that makes congregational singing work, speech will be equally as good.  Around the world if there are such churches that have the proper balance of sound, for speech and congregational singing, why has no one documented these jewels or studied them to see what makes those churches better than others.  No one has made permanent records for future churches to follow. 

It seems that when a church gets known for its musical performance quality, it usually suffers from speech, and for years people have been brainwashed into believing that you can’t have a worship space that is good for both speech and music.  That comment is true, for a musical performance space or concert hall.  This is not what a church needs. A church needs a room to support congregational singing, not musical performances. 

When I get hired to fix a church, one comment that is repeated often is, we can’t afford or don’t want a concert hall.  That is the whole point.  You don’t want a concert hall, and it would be detrimental to a church to have such a space.  Concert halls do not support congregational singing, none of them do.  Concert halls are awful for speech.  If you look at most concert halls today, when it comes to speech, they close curtains, expose absorption panels, and they rely on costly sound systems to broadcast speech events.  Concert halls are either-or spaces.  They cannot support speech and music equally.  Furthermore, they don’t support audience singing at all.  How do I know that?   When I go to most of the churches that I have fixed in the past, when the attendance is around 90%, the congregation can drown out the pipe organ, the electronic organ, and the amplified worship team.  Yes, it is possible for the congregation to drown out a sound system with professional Christian performers leading the music.  That is what good acoustics can do in a worship space.  When people try to sing like that in a concert hall, it sounds like chanting in a sporting event.  It is not very musical and singing in four part harmony is out of the question.  In a worship space, a well-motivated congregation can sing over 105dB with the sound system off when the acoustics are managed for congregational singing.  If only the sound system could perform that loud without distortion and without the congregation complaining about the loudness.

Consider this, the invention of the sound system and its introduction into churches merely ushered in over time, the ability for contemporary worship, with the goal to get more people singing.  Yes, many churches tried amplifying the choir as a means to get the congregation to sing, it didn’t work.  When it came time for speaking, the sound system failed as well to amplify speech properly without feedback – This created a dilemma.  To make the sound system perform better for speech, churches add absorptive flat panels, and that usually means killing the room, which in turn, discourages singing.  The sound system was believed to be the solution to improving worship, but the truth is, the sound system can only amplify what the room allows.  In this struggle between the sound system and church worship, no one looks at the room as being the limiting factor.  Instead, observers and people asking whomever as to what can be done, the fingers point to the technology, the pastor, the song leader, and the soundmen who get all the blame.  All of the other recommendations are meaningless until the room is fixed.

The only complaint this church has is that congregational singing is much louder up front.

As I mentioned earlier, I fix the sound in churches all over the world.  Without changing the leadership, the pastor or song leaders, and without changing how worship is conducted, with the methods I use, most congregations go from 10 to 30% of the audience singing to 65 to 90% of the audience singing when the room is fixed.  That happens because there is a way to make the room very responsive to exactly what people need to hear and feel during the singing portion of worship.  At the same time, the same system improves the quality of speech, and as a bonus, the performance of the sound system increases substantially more.  Doing church acoustics correctly, is being able to have a room that does both speech and congregational singing equally well.  It also winds up being a good room for Christian concert and drama performances.  Is it really possible to have a worship space that does everything well?  Yes.  Should you think that this is about a compromise? Think again, it is not.

The method of sound management that I have been using in churches is not of my design.  I cannot take direct credit for these successes.  I learned from an expert in Church sound.  This sound management system that is now in over 450 churches, is the same method as originated by the hand that guided the fingers of King David, who designed King Solomon’s Temple.  The acoustical system that I use is the same system that was designed by God.  As I said, I can’t take credit for the success in the churches that have this system.  Here is condensed version of how I learned about it.

Years ago, I had read or heard this verse in 1 Kings 6:29, which says that on all of the walls within and without, there were carvings of Cherubs, Palm Trees, and open flowers.  Then one day and as the pastor was reading this passage from the pulpit, it dawned on me that the palm trees seemed out of place.  They have no aesthetic value.  There is no spiritual, nor ritual reason for having palm tree carvings on the wall.  Then the acoustical knowledge I was learning at the time kicked in.  If there was no acoustical treatment within the temple, the Levite Priests would have not been able to understand each other.  That room would have been ringing well over 5 seconds.  Under those conditions, even at 24 inches, the reverberation would have made it difficult to impossible to understand speech.  It says that in the large room of the temple called the Holy Place, that the priests taught, they read the laws, they played musical instruments, they sang and prayed.  They also did rituals that would have involved speaking.  What was in the room that allowed them to do all of those activities, which are also the same actions we do in churches today?

After doing a lot of testing and experimenting, I discovered that the shape of the palm tree could be mimicked with cheap cardboard tubes. This changes the performance of any existing church into a high-quality worship space that supports both congregational singing and speech.  Before installing any churches with cardboard tubes, we tested a number of churches.  For the first church tested with cardboard tubes, we used 10 and 12 foot long tubes, leaned them against the walls of a church and left them there for three weeks.  At the end of three weeks, not only was speech so much better, but the number of people participating in congregational singing doubled.  This was a huge surprise, and it was unexpected. We repeated this test in a dozen churches, and all of them had similar results. With those outcomes, I started recommending churches to use half-round tubes around their worship spaces, and every time as a new installation was completed, the results were almost all the same. (Let’s face it, some room shapes are better than others.)  Speech improved, and congregational singing always was much better.

In most cases, at the 6th month follow up to an installation, the contact person would tell me two things.  The first was an attendance increase.  The second was that 65 to 90% of the congregations were singing every song.  In most cases, there was no change in leadership, or order of worship or how singing was conducted.  All of the deadspots in the room were gone.  Now you could sit anywhere and sing out and feel like you are part of something big.  Sometimes I also got glowing reviews of how the sound system was fixed when nothing was done to the system except for some equalization. 

Since around 1994, over 450 churches have applied this method of managing the sound in their worship spaces.  All of them have reported similar results.  The interesting thing was, most of these churches didn’t hire me to fix their congregational singing.  They hired me to improve the performance of their sound systems.  They wanted better speech intelligibility.  The half rounds tubes are the most cost-effective solution to improving the performance of any sound system.  This method fixes the sound system much better than using any absorptive panel. 

There is also a unique feature that half-round tubes have that no other acoustical system can do.  The half-round tubes, when laid out in a specific pattern, can equalize a room.  By adjusting the spacing, the sizes, and when using prime number sequences, if there is enough wall space, you can cut up to 40dB of excess sound energy from 50 to 1200 Hertz.  If your worship space has excess energy, for example, at 400 Hertz and it feeds back there all the time, you can space the diffusers to cut out that frequency range.  No other acoustical system in the world can do that.  The most powerful acoustical system in the world comes from the Bible, and it is designed by God.  Many people say that the Bible is sufficient in all things, and this is another example of that Biblical truth.

We have to stop blaming worship leaders, song leaders, and pastors for the lack of congregational singing.  Saying things like changing the key to sing in or changing the order of music is blaming the worship leaders, and because of acoustics, all of their efforts cannot get any significant results because the room will cancel their efforts.  Song leaders are always searching high and low for answers, and if you watch them carefully, they are constantly trying new things to get the congregation to engage more.  Sure, for the short term, they might get an additional number of people singing, but after a few weeks, it goes back down to where it was before.  It’s not that people don’t want to engage; it is because the room will not allow them to participate in group singing.  This is the real reason why so many churches with contemporary worship styles have sanctuaries that are as good or better that performance clubs in Las Vegas.  So many churches have turned to an entertainment style of worship.  How un-Biblical is that!

On the internet, there are plenty of videos of young people in churches with hands up in the air and swaying to the music, but if you look closely, most of them are just mouthing the words, they are not singing.  That is not worship.  When what goes on in a sanctuary looks more like a rock concert, it is not church or worship.  It is just clean, mostly unspiritual entertainment. 

If there is any blame to go around, here is an uncomfortable truth.  When I am hired to help a church, congregation members always tell me how, for years, they have been complaining to the church elders.  Since churches are so reluctant to share their experiences with sound to other congregations, most church elders feel helpless because there are no standards for church sound and acoustics for them to turn to.  When they ask consultants for help, they say, ask 10 sound guys what to do, and you get 10 different answers.  This madness has to stop.  The Bible has the solution, and it is a solution that just about any church can afford to do. 

The best way to improve congregational singing is by fixing the worship space to the same standards as outlined in the Bible.  In the end, this is the only option.  If your church already has more than 65% of the audience singing, you are most likely not having an issue of the congregation being engaged in worship.  For the rest of the churches out there, seek out what God can do for you.  You don’t need an expert or acoustical consultant or sound system engineer to have a successful transformation.  Churches can do this on their own.  All you have to do is look at the examples on my website and copy whatever layout you see.  If you need more help and can afford the cost of a consultant, hire one who understands the Biblical way to solve church sound problems and congregational singing.  There is no mystery or formula or program when solving the congregational singing issue God’s way.  Congregational singing is also a spiritual issue.  It is what binds up together as believers.  Stop solving spiritual problems using mans’ ways.  God’s way always works.  Don’t take my word for it.  Trust God.

(c) By Joseph De Buglio March 2020.

Posted in Church Acoustics, Church Sound Systems, Educational Must Read Articles | Tagged: , , , , , , , , , , , , , | 1 Comment »

What are your Church Priorities about sound when it comes to preaching the Gospel?

Posted by jdbsound on February 25, 2020

Is the performance of your worship space a priority?  Is the message always crystal clear in every seating position, and over 60% of the congregation is singing all the time?  If you say no to either or both questions, and you want your church to sound right for speech and music, the biggest obstacle is often the acoustics.  The second is money.  The third is aesthetics.

Fix the room!  How?  Follow what the Bible says, and you will not be disappointed.  After all, it is God’s plan, not man’s idea.  Do you think that the results will be less than perfect if you follow His plan completely? Isn’t the Bible the Living Bible?  Since when did the Bible stop teaching us new things about science?  Check out Solomon’s Temple, and the answers are there.  They always have been. It’s just taken a while to join the dots.

But it costs too much!  Oh, you mean the cost of a few floor monitors or a couple of wireless microphones considered too much?  That is often the cost of the Bible’s way of fixing the acoustics or about $3.50USD per seat for a 300 seat church. (Not including the price for the knowledge of knowing what to do.)  Replacing a mixer costs about $15.00-21.00 per seat.  Replacing pews for chairs cost about $75.00 per seat.  Buying 10 Shure SM58 mics with cables and mic stands – costs about $1,500.00.  Fixing the acoustics of a church is cheaper than you think.

If the look of any acoustical treatment is a concern, ask yourself this.  Are you there to worship God or the building?  Fixing the acoustics is like saying you are more interested in hearing what God has to say through your minister.  Putting up with acoustical problems, poor quality congregational singing, and accepting a sound system with limited performance is like saying the building is more important than the message and having fellowship with other believers.

It all comes down to priorities.  The primary purpose of any building that is a dedicated House of God is the preaching of the Gospel.  A place where the Gospel message can be spoken without distortion or interface.  That includes making the room behave as God would want us to have it.  The second priority is the breaking of bread and drinking of wine in remembrance of what Jesus did for all of us.  The worship space has to support this event as often as each church chooses to remember.  The next priority is congregational singing.  There isn’t any other experience that can replace the joy and excitement of a room where more than 75% of the audience is singing.  Songs that tell stories of Jesus, his atonement of our sins, and of people who follow Jesus are powerful in bringing people together.  It takes the same quality of acoustics to hear clear speech as well as great congregational singing.  These are the things that matter when you are a part of the Kingdom of God.

While I do have a business about church acoustics and sound, there is no possible way for one person or one company to fix all of the churches out there that need help.  By making this public, it means that no one can patent it and force churches to pay a license fee. It means that no one can control it and inflate the cost of fixing existing and new churches.  Churches should use the Bible’s methods with confidence, to apply in faith what God teaches, even without expert help.  When churches take such a leap of faith, in most cases, the results are outstanding.

This information is being shared because I care more about winning people for Christ through better sound than creating a business empire.  By revealing what the Bible teaches, by showing that science backs it up, that it is affordable for every church to have excellent acoustics, this is all part of the Great Commission.  If more people with a passion and skills like mine, were to apply what the Bible teaches about sound, we could make a difference.  Mat-7:15.  Beware of false prophets, which come to you in sheep’s clothing, but inwardly they are ravening wolves. (KJV)  If you have the chance, read the rest of what Jesus said in Mathews 7:15-20. Don’t trust me.  Trust the Bible.

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Is your minister preaching a distorted message unintentionally?

Posted by jdbsound on February 17, 2020

When sharing the Gospel, so many times, someone has said that they didn’t like what the minister said during a worship service, so they left the church.  They thought the minister was preaching a false message.  Some people have told me that they walked out of a worship service upon hearing the distorted message.  I would ask them if other people left the service at the same time.  In every case, they said no.  That is when I try to retrieve the audio record of that specific service.   As it turned out, on the recording, the minister said the right things, but why was it heard in the sanctuary as something else? 

The next step was to play the recording over the sound system and sit in the same spot the person complained about what he heard.  Sure enough, the same gibberish that got the person upset was heard in that spot.  When you moved several feet over in any direction, the sound was clearer, yet in other places, different words were being twisted.  With the recording on a loop, we found dozens of other places where the minister’s words were warped into something else.  Doing this exercise did get one person to try church again, but in most cases, when something like this happens, most people will not return to a church where the Gospel is preached.

Sound quality matters.  What good is excellent speech intelligibility in one spot and a failure in another?  Sound quality can save people and their souls.  I have never met a person who was saved by a song, but I had met many people who were saved when they heard the clear and undistorted message of Jesus Christ and become followers of the Messiah because the message was clearly understood. 

I often wonder how many other people have experienced hearing something different than what the minister said in a sanctuary. For many ministers and church leaders, it would never occur to them that the sound system was the cause of some people not returning to church.  The unfortunate truth is, many churches have questionable acoustics, and when a person sits in a spot where words, syllables, or the sound volume is too low, what was said and what is heard were not the same.

Sound systems cannot fix the acoustical problems of a church.  Adding more speakers or applying the latest state of the art technology tricks are no match to Architectural failures in room design and unmanaged sound sequencing around a room.  Absorptive panels are often the first weapon used to tame a room.  Cutting down on the noise and reflections with absorption cannot fix deadspots or hotspots.  Absorptive panels cannot change the path of sound reflections that causes uneven sound distribution. Absorptive panels have been known to make the sound harder to understand in those poor locations throughout the room, not better.  What is needed is a different weapon to defeat poor sound.

To eliminate hotspots and deadspots, you need to be able to distribute sound more evenly.  Scattering the sound is the most effective way to create a unified sound field throughout the whole sanctuary.  When sound is managed in this way, not only does it eliminate deadspots and hotspots of any speech problems, but it makes congregational singing, praise and worship bands clearer, the stage sound is corrected, and for many churches, they bring back choral music because it sounds better than what a worship team could do before the room was fixed.  In most cases, scattering the sound costs less to do than absorbing sound. 

Acoustical solutions for churches that work should be common knowledge as these concepts have been around for years. Fixing a church can often be restricted by how a solution may look. It is high time that the aesthetic police take a back seat from preventing the Gospel message to be preached clearly.  If aesthetics are a big deal, alternatives are always possible.  In the end, it is all about priorities. You have to choose between hearing the Gospel or have a Church that looks good.  What will your church do?

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The Father of Modern Day Acoustics, Wallace Sabine and Solomon’s Temple

Posted by jdbsound on February 5, 2020

Introduction

In the field of acoustics and sound, many have said that Wallace Clement Sabine is considered the father of modern-day architectural acoustics. His scientific work was not only the foundation for concert hall acoustics, but few are aware of how his work has impacted the church community around the world. According to several sources, he was raised in a protestant home, but as an adult belonged to no church and professed no religious faith, yet his work has impacted churches in ways even Wallace could not have imagined. Wallace’s work included figuring out a prediction model of how to apply absorption to tame a room. He also proved that the reverberation time alone is not enough in helping performance spaces with their sound needs. He laid down a foundation, showing that you need much more detailing and care to create suitable sounding spaces, not just for concert halls, but for full Christian worship too.

Shortly after his discoveries and successes, most acoustical experts, Architects, engineers, and audio experts have focused on one thing, the reverberation time of a room – ignoring much of his actual contributions to modern acoustics. When Wallace created the first equation to calculate how much absorption is needed, most people thought that this equation was something magical. It was almost as if a single number could solve all sound problems for concert halls and performance spaces. While such a numeric value is essential, it was a small part of a much larger picture. Sure, Wallace did devote a lot of his time to such studies. Unfortunately, the absorption calculation moved from being a small tool as part of a broader view of performance acoustics to becoming the only thing that mattered. This equation gained mythological-importance to the point that for many laypeople….

To read the rest of this article, download the PDF file with this link. https://www.jdbsound.com/art/father%20acoustics.pdf

Once again we see science and the Bible in almost perfect harmony. Within science, there are many tools. For acoustics, there are specific tools. With the help of the Bible, it requires a set of tools that are unique to churches. For concert halls, recording studio’s and other entertainment venues, there are a set of tools for each one. Most of those tools do not apply to churches. When the tools of an acoustical consultant don’t use the Biblical tools exclusively, you will always get the acoustical performance of what those tools were based on. If you have only concert hall or studio or entertainment tools, then the results will not meet all of the needs of the church. If you use Biblical tools, you wind up with a House of Worship as the Christian community should have, but most churches don’t have a clue of what they are missing out.

Solomon’s Temple was very detailed in how it sounded. If you believe in the Trinity as I do, because of John 1:3 you know that Jesus design the temple that Solomon built. Without the acoustical planning in Solomon’s temple, the Levites would of had to have super natural powers to hear each other within the walls of the temple. There is no record of the Levites having such powers. What did they do to the temple to make it possible for people to hear in such are large space?

Here is something to consider. If Solomon’s temple is a myth, then the details of how the temple walls were completed should not have survived over history. After all, there is no record of the interior of Herod’s Temple other than some carving on the ceiling that Herod ordered which is not in the Bible. If someone says the Scriptures are not the inspired word of God, then the details of Solomon’s temple wouldn’t matter. But what happens when you apply the details of Solomon’s temple to an existing church? If it is a myth, nothing should happen. If it fixes a church, doesn’t that prove God, Jesus and the Holy Spirit? What does that mean if over 400 churches have applied such a system in faith, using the same methods from the Bible to make the acoustics of their churches as best as they can be?

The details of Solomon’s temple matters. Nothing in the Bible is about trivial nonsense. Everything in the Bible has a purposes and the details of Solomon’s Temple is a roadmap to fixing existing churches and it should be a template for new churches today now that we understand why such details were persevered for us in the scriptures today. How many more churches need to be convinced before it becomes a normal way to complete our houses of worship?

If anyone with normal hearing in a church has trouble understanding what is being said in God’s House of Worship, the Bible has the solution for that. And that solution is very affordable. Please enjoy the rest of the article.

The Father of modern acoustics

By Joseph De Buglio (c) 2020

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Is Church Acoustics Easy?

Posted by jdbsound on December 23, 2019

There are two answers to this question. When you follow just the science, the correct answer is no. When you follow what the Bible teaches, the answer is yes.  Church acoustics is simple, but many will tell you otherwise. While it is easy to change how a room sounds, it is another thing to change the sanctuary to perform appropriately for a complete Christian Worship experience regardless of the denomination or congregation you belong. Christian Church worship is unique and the acoustical requirement of any church cannot be found, practiced or learned outside of any church community adequately.

Concert halls, recital halls, recording studios or any room where non-Christian people revere as great places for music or live stage performances and entertainment, these places have clouded, (Mat 7:15) the judgment of churches communities all over the world for years of what Christian worshipers need in a large room. When we turn to the Bible for the kind of worship space we are supposed to have, the answers most Christians are looking for are right there.

Science has not caught up with what is required for church acoustics. It is not able to predict the perfect acoustics a church needs. In each generation of computer modeling, it is getting much better. The good news is that we don’t have to wait for science to catch up to modeling proper worship space acoustics. The Bible has always had the solution as a tool to solve or plan church acoustics, even in the 2100 century. When such planning is applied the outcome is still what a congregation wants and needs. Here is a prime example of Biblical Scientific Foreknowledge at work. When we look past the Golden walls and floors and peel back the details of how Solomon’s Temple was designed and finished, we discover a worship space that every Christian congregation should have today.

The Bible has always had the proper teaching or formula for large room “Worship” acoustics. Did you know that without God’s design for acoustics, the Levites would not have been able to do any ceremonies or teaching in the temple? In Solomon’s Temple, there was an acoustical system given to Solomon that was applied. When employed in modern churches today, it solves almost all of the acoustical problems we can often hear and it makes the worship space better for congregational singing every time. Hundreds of churches have already been fixed or planned in this way. How many more before we can trust the Bible for modern church sound needs?

For church worship, whether in a classical or modern church structure, a commercial space, or converted space, there are many performance requirements to obtain the full worship experience which includes hearing the Gospel unfiltered by the poor acoustical performance of a sanctuary. (Poor acoustics acts like a changing filter that pollutes the Gospel. It can make similar words sound different which changes the meaning of what was said. For people familiar with the Bible, this may not be that big of an issue but for a person who has never been to church or is unfamiliar with church speak/language, when the room changes the pronunciation of a word, it can change the meaning of what they thought they heard. A church with the proper acoustics will prevent most of these mistakes regardless of what a sound system can do.) There is preaching, prayer, congregational singing, testimonies, choirs, worship teams and worship concerts. All of these parts of worship have to perform equally.

Church acoustics is not straightforward without the Bible. It is very complicated and any person designing an acoustical change should be including all aspects of worship, not just making a quick fix because of an irritation. As more churches recognize this truth, many are fixing existing past acoustical treatments that were done with good intentions and without help from the Bible. For example: Many people working in live sound don’t know that most hotspots and deadspots are acoustical problems and made worse when the wrong sound system design is installed. If your church has the right sound system design and there are still places where the sound levels and speech intelligibility is a problem, the sound system is telling you or screaming that it is a room problem -even if there is not feedback noise.

Church acoustics can be confusing, even with Biblical help. Experience has shown that there can be three churches that can have the same shape, dimensions, and age, and all three worship spaces different acoustical fixes. On the other hand, you can have three churches of different shapes, different dimensions, the same seating capacity and from three different ages and yet the acoustical solutions look almost the same to get the best performance for speech, prayer, congregational singing, choral singing and worship team performances. These differences in acoustical treatments are not easy to figure out regardless of the sound system design, equipment, and operating skills.

If the reverberation time is too long, don’t just fix the reverberation time. There are always at least two to five other problems that are being masked by the long reverberation or long time of noise. Correcting only the long reverb time, in most cases, exposes or creates bass problems that weren’t audible before, but the acoustical measurements said that such a predicament would happen. When the subs don’t sound good, you put a cage around the drums and you can’t mic the choir. When the floor monitors are too loud or as loud as the FOH speaker system and you are forced to get in-ear monitors. Then you have to get the worship team members to sign a waiver to not sue the church for premature hearing loss. Fix the room properly to meet all aspects of worship and you can avoid all of these issues.

Church acoustics is complicated and people who do Recording Studio, Concert Hall, Recital Hall, and noise control acoustics all have good intentions in wanting to help out a church. If their solutions are not based on what the Bible teaching, sure, they can change how a room sounds, but will their fixes be what a congregation needs? The choice is yours.
What is rarely taught or shared except on this website, is that a sound system is a magnifier of how a room performs. If the acoustics and shape of a worship space work, the sound system will tell you by how well it performs. If the acoustics are wrong, the sound system will be limited in what it can do. If after changing the sound system twice in the last eight to ten years, didn’t make that much of an improvement, do you really think a third sound system will be any better?

What is also not taught is that it is cheaper to bring a sanctuary up to worship space requirements that support all aspects of worship than to upgrade a typical church speaker system that can only make an incremental improvement for amplified sound. Fixing a room that meets worship space requirements often makes the current sound system perform profoundly better (unless the sound system is so poorly fabricated that it needs to be redesigned and reinstalled if the hardware is up to the task.)

Church acoustics can be easy when you follow the scriptures. Jesus never spoke of this because he already has given us the plans. Jesus said in Mat 5:17 “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them.” The Bible also says that all things were made through Him from the beginning. Jesus could not abolish the laws He created with His Father and the Holy Spirit (John 1:1-4.) There are many churches out there with poor sound, poor acoustics and have members who want to experience the full Christian life including the complete worship experience we all should be having. When you look past the gold and wealth surrounding Solomon’s temple, you will discover a blueprint from Jesus of how all worship spaces should sound. If that means duplicating Solomon’s Temple, that is what we should be doing. How is that so different in the fact the every church practices communion in one form or another. Every church has prayer, singing, reading of the scriptures, sermons and fellowship of its followers. Every part of a person’s life is in the Bible, whether any person can follow it 100% of the time or not. The same should apply to the houses we call churches that are dedicated to our Lord Jesus Christ.

Joseph De Buglio
A Servant of Jesus Christ.

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Does Your Church Need help with Sound?

Posted by jdbsound on August 1, 2019

Here is a collection of 445 photos of 46 churches that completed most or all of their sound system and acoustical plan.  My job is to design a solution that will solve all or almost all sound problems in one step.  For most churches, this means getting the most accomplished in one step as most churches can’t afford to keep chasing sound problems without truthful help.  The road back to great sound in the church is in the Bible, and that is what these churches did. 

All of the installations of the acoustical systems and the sound systems were completed by church members or local contractors when those churches were able to afford professional installers.  The final appearances are what those churches selected.  I work closely with all churches for alternative aesthetics regardless of any budget limitations.  When a church has to choose between aesthetics vs. performance of the 400 plus churches that have just simple painted cardboard tubes on the walls, those churches spoke with what they installed. 

These churches demonstrated that they care more about hearing the Gospel than having a sanctuary that looks good.  There is a high spiritual cost for poor acoustics and sound system designs.  Poor sound does get in the way of people hearing the Word, and for some, it can deny people from understanding the Gospel message of salvation, and that is a cost no church can afford.

For professional, no compromise help, we can provide the highest level of expert assistance that will fulfill the Great Commission as Jesus taught. Having the skills of the world helps but God’s plan for churches demands His way of doing Church Sound. Without that knowledge, the worlds way of doing church sound always comes up short in meeting the standard that God demands of us.

Click the photo above or the link below to see what other churches have done to have great sound for speech, congregational singing and total worship in general.

https://www.flickr.com/photos/jdbsound/collections/72157627021000982/

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Seeking the Truth

Posted by jdbsound on July 18, 2019

As an expert in Church Acoustics and in the pursuit of the truth, I have also been passionate about finding ways for all churches to afford an acoustical solution that will solve just about every sound problem most churches run into. What can be more exciting than knowing that the cheapest and best acoustical solution in the world for all churches comes from the book that all Christians follow and obey – the Bible. When a church uses the Bible’s method for acoustical management, sound problems almost all go away and in most cases, a sustained higher church attendance happens after around 18 months. God is the author of Church Acoustics and it is time for churches to seek God first for answers and God will reveal His way to solve sound problems in His Houses of Worship. Whenever a church is dedicated to God, doesn’t it become His House?

Joh_14:6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me. If we take that a step further, Jesus was present in the design of Solomon’s Temple. While Millions have already been saved in the past, present and hopefully the future, how many more can be added if all Houses of Worship were built or brought up to the same acoustical standards as in Solomon’s Temple? Since most churches don’t have that quality of room acoustics, I guess we may never know!

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Watering Down the Gospel

Posted by jdbsound on July 8, 2019

Years ago, someone wrote these two sentences to make a point about the quality of sound.

How to wreck a nice beach?

How to recognize speech?

In many churches, when these one of these two lines are spoken over the sound system quickly, regardless if they are using a headset mic, lapel or lectern mic, most people guess wrong when these two line are projected onto a screen.  You can have the best pastor around but if the acoustics are not up to Solomon’s Temple quality, the room could be watering down the message more than what many may believe.  The priority for sound in a house of God should always be quality of sound over quantity of sound.

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1 + 1 = 3 or When is Doubling the Power, not +3dB?

Posted by jdbsound on June 17, 2019

Here is a simple test anyone can do to determine the acoustical condition of a church.  Physics says that when the power* is doubled or when doubling the number of speakers, the sound level will increase 3dB.  This result is real when outdoors.  This outcome can be false indoors.  When it is false indoors, it is because there are acoustical problems.  Please notice that it is problems, not a problem.  When adding a second speaker failing to increase the sound 3dB, this test shows that it is never a single acoustical issue.  It is not a sound system problem.  The sound system is exposing the root problem. (If the second speaker is wired out of phase, the sound will decrease in level.)

Outdoors, sound follows the basic rules of physics.

When outdoors, if there are two loudspeaker playing with the same volume of pink noise side by side or up to 6 feet apart, and set up a test microphone or SPL meter 30 feet away. (An iPad or phone with testing software can be used if it is calibrated.) When the second speaker is turned on or off,  the sound level will change 3dB.  This result is constant in physics.  The reason this is always true is that there are no barriers around to limit the sounds from spreading out or returning from a reflection that can interfere with the direct sound.

When indoors, depending on the size of the room, often this is not true.  This failure is noticed the most with Subs and sound energy below 500 Hertz.  Doing the same test at 30 feet inside of a church, the sound level change is often 1, 1.5, or 2dB.  If the result is 3dB, there are either a lot of open windows, lots of doors that are open, the church has more than 3000 seating or the church has great acoustics. 

Indoors, sound is confronted with many other rules of physics which changes how the first rule works.

Here are the most common reasons for the sound failing to increase 3dB when doubling the power or speakers.

  • Standing waves
  • Dimensions of the room
  • Too much-stored energy in the corners
  • Too much high-frequency absorption

Standing Waves

Standing waves are excessive amounts of energy between parallel walls within a confined space.  It can often hear it.  To listen to it in a rectangle room, go between the parallels walls that are the closest together. Often it is the side walls.  Stand about 4 feet from one of the side walls.  Make a loud, sharp noise like a hand clap once.  If a person hears any rapid pinging sounds, this is a sign of standing waves.  The sound heard is often a higher range of frequencies, and they usually called flutter echoes.  Flutter echoes are a symptom of standing waves.  Bass sounds, which have longer wavelengths can’t produce the same volume of sound to hear as a flutter between parallel walls.  Whenever a person hears flutter echoes, excess bass energy present too.  This result is also true for all other room shapes when flutter echoes or flutters from a simple hand clap occur.

A second clue to standing waves is when standing at a pulpit or where a minister preaches from. With a hand clap, if the reflected sounds are coming from the side walls or behind standing waves are the cause of it.  The standing waves are preventing a large portion of the sound from reaching the other side of the room, and what is reflected back is being canceled out by the standing waves a second time which in turn prevents people from hearing the clapping returning from the back of the room. Standing waves have the effect of isolating everyone from each other in the room.  This result is also why the drummer seems to sound so loud and why most drummers strike the drums harder than they have too. It is because they can’t hear their drums at a lower level.  This outcome is also why many people comment that they can’t hear themselves when singing, and it makes them feel alone in a room full of people.

Any church with parallel walls will have standing waves if there is nothing to manage them

The reason the sound doesn’t increase 3dB when adding a second loudspeaker is because of the excess bass energy created by the standing waves in the worship space.  The excess air pressure is like putting a finger lightly on the woofer.  The excess air pressure acts as an acoustical load on the woofer, and that dampens the amount of sound coming from the loudspeaker.

Standing waves can only be removed with diffusion or some form of sound scattering. 

If people try to use absorption to fix this problem, while it will remove the flutter or in some cases, shift the flutters to a lower frequency, the untreated bass energy will make the standing wave problem more pronounced.  It will increase the feeling loneliness and discourage the congregation from singing even more.

The dimensions of the room

In churches with low ceilings or seating less than 200 people, the room is too small to be free from surface related sound inference reflections.  In a larger church space with a flat ceiling less than 16 feet high, the room will have standing waves floor to ceiling which limits the ability to increase sound 3dB with just doubling the speakers.

The reason the sound doesn’t increase 3dB when adding a second loudspeaker is that the room is limiting how much the space can support.  The excess air pressure from the extra speaker is like putting a finger lightly on the woofer.  The excess air pressure acts as an acoustical load on the woofer, and that dampens the amount of sound coming from the loudspeaker.

The only option is to diffuse all of the room if a small church.  If a low ceiling, diffusers will have to be added to the ceiling.  Acoustical tiles and drop ceilings cannot correct this issue.

Too much-stored energy in the corners

Another principal of physic is how sound is affected by boundaries.  A loudspeaker on a 10-foot pole measures 60dB.  We call that free space.  When we put the speaker on the ground, the speaker will be 6dB louder.  That is referred to as “half space.”  When we add a wall and the floor, we call that “1/4er space” and the sound increases 12dB or doubles in loudness.  When we add a second wall to the floor and create a corner, that is “1/8th space,” and the sound rises 18dB. 

Corners collect the air pressure that is created by longer wavelength sounds that accumulate on the flat surface of the wall.  With nothing to direct the sound, the sound pressure moves in all directions.  Eventually, the excess bass energy makes its way to the corners.  Depending on a lot of variables, the amount of energy that builds up is often too much.  Churches will low ceilings, large flat walls, or flat ceilings tend to have too much excess bass in the corners.  All other church shapes, except for domes have varying levels of corner issues if not managed.  Excess corn energy has a similar effect as standing waves.  When there is too much bass, it masks the highs.  This, in turn, creates hotspots and coldspots throughout the room. Hotspots and Coldspots are frequency dependent. If the sound level changes are of a narrow range of frequencies, it was most likely found them with instruments.  When a person notices them with their ears,  it means anyone with a hearing problem will miss out on some of what is being said, or what they heard and what was said was different. 

When the front of a church is in the corner, everything is either 18dB louder or 18dB quieter when compared with churches that have the front on an end wall.

The reason the sound doesn’t increase 3dB when adding a second loudspeaker is because of the excess bass energy created by the bare walls in the worship space.  The excess air pressure is like putting a finger lightly on the woofer.  The excess air pressure acts as an acoustical load on the woofer, and that dampens the amount of sound coming from the loudspeaker.

Keeping excess sound out of the corners is best done with diffusion.  It cannot be done with absorption unless the absorbers are as thick as the wavelength of the sound waves.

Too much high-frequency absorption

Sound arrives at our ears as air pressure vibrating at a rapid rate.  The faster the air vibrates, the higher the sound pitch.  The slower the sound vibrates, the lower the pitch. The vibrations are referred to as Hertz.  Sound travel at 1130 feet per second.  At 100 Hertz, a bass sound has the wavelength of just over 11.3 feet.  At 1,000 Hertz the sound waves are 1.13 feet, and at 10,000 Hertz the sound waves are 0.11 feet or 1.3 inches.  

When there is too much absorption in the room, what is left is too much bass. The excess bass masks the highs. 

For most churches, carpeted floors and padded seating is all the absorption needed. When this much absorption is add, the congregational singing is very dull and people have to be super motivated to see more that 20% of the audience singing.

The reason the sound doesn’t increase 3dB when adding a second loudspeaker is because of the excess bass energy created by too much absorption.  The excess air pressure is like putting a finger lightly on the woofer.  The excess air pressure acts as an acoustical load on the woofer, and that dampens the amount of sound coming from the loudspeaker.

The fix for such a problem is by removing the right amount of absorption panels and replace them with diffusers.  Then complete the room by adding more diffusion throughout the sanctuary to correct the frequency response of the room.

These four issues are never a singular issue.  They are often in combinations or can include all four.  Along with these problems, there are often reverberation issues, echoes, excess late reflections, the poor frequency response of the room, and other room problems that have little to do with this simple 3dB test, but they are usually there as well.  These problems can be heard when a person learns what to listen for.  Looking at how sound system is equalized is another clue of room problems.  The issues have the result of the high numbers of the congregation not singing. (In a church with good acoustics, they will often have more than 80% of the congregation singing every they are familiar with.)

Getting two loudspeakers and doing this test is simple and easy to do.  If the sound doesn’t increase 3dB, this means that adding more subs or more speakers into a worship space will not get the expected outcome. For example.  If the goal is to increase the bass in a worship space 3dB, and sound system has only one subwoofer, do this test, If the bass increased only 1.5dB with the second box, then it will take two more speakers just to get a 3dB increase for a total of 4 boxes. Think of the cost of adding three speaker boxes and all of the related hardware required to support that.  An alternative would be to fix the room with diffusion, the gain will be 6 to 10dB of performance without doing anything to the sound system.  It would be equal to adding 8 or 16 subwoofers depending on other acoustical or architectural considerations.  

Science is amazing when appropriately used to provide real solutions. Pseudo-Science or fake data is often used under the disguise of science and can be used to lead churches to false conclusions.  Many experts in audio and acoustics who see the same data, know these problems are present.  If they are not being addressed, it is because they lack the experience in knowing how to solves such issues.  If a person has done this test and the sound system provider or acoustical expert is not addressing these issue, they are not qualified for correcting sound problems in a church.  It’s like asking a Doctor who specializes in kidney problems to do Brain Surgery. What is needed a Brain Surgeon who knows how to fix both the acoustics and to design a proper sound system.

Get the church correctly evaluated before investing in that next sound system.  It can save those responsible a lot of disappointments down the road.  Fixing a room can cost less than replacing a sound system, or it could mean reducing the size of the suggested new sound system.

* Doubling the power required calibrated volume controls or switches to set up correctly as a viable test.

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Ten years later Kingston Rd United Church

Posted by jdbsound on May 29, 2019

Kingston Road United Church had sound issues. They tried several sound system designs with no real success. Someone suggested JdB Sound Acoustics.  When I arrived, an elderly lady came to me and said, “If you can’t fix this room, then this church will not be around much longer.” Somehow, several people on the sound committee believed that if the church sounded better, they stood a better chance at keeping the doors open.

In 2008, I was hired to fix the room. I designed for them an acoustical and sound system solution. The sound system was completely replaced. The acoustics plan was using half-round tubes on all of the walls. The results were as several people put it – Amazing. Before, you could not understand anyone talking more than 15 feet away. After, you could talk end to end of the 120 ft — long worship space. The church seats 550 people.

Today in 2019, the church is thriving. It has become a place for concerts, drama and singing events. The church is growing in a location where there is only one parking spot. Church attendance may still be low, however it is higher than in 2009 and with all of the other activities, it has been more than enough to keep the doors open. Acoustics alone didn’t keep the church from closing, but it became a tool to attract new members and other forms of income for an inner city church. Good acoustics seemed to inspire the church leadership to have confidence in knowing that if people could have a good hearing experience, the greetings they would receive from the members would be that much better.  There is also proof that good sound means a greater chance for people to return.

A few years back. Cinemacoustic Solutions Int’l, Harrisburg, Pennsylvania, did an experiment with two theatre test rooms. Both rooms were identical the same visually with one room properly treated acoustically, and the other was not. Room “A” was treated properly; however, Room “B” was not treated at all.

Here is a summary of the results.

“Funny enough, while many of the students made comments about the sound, stating they thought the speakers in room “A” sounded a little better than those in “B”, nearly all of them said, “the picture in Room “A” was far better than that of Room “B”. The properly treated room allowed them to see & hear content at a caliber they may not have ever experienced before, to which they naturally attributed to better equipment, as opposed to the acoustical treatment of any sort. The properly treated space relaxed their senses allowing them to enjoy the environment and what they were doing as opposed to subconsciously concentrating on what they needed to do to better enjoy their surroundings.

The same subconscious energy applies to an orator speaking in an untreated room vs. a treated room. Even a boardroom with executives around tabling important and perhaps complex company matters, they can concentrate better when not “fighting” bad room acoustics while conversing or passionately presenting their opinions, vying for votes. They would never attribute the lack of ability to concentrate on poor acoustics because they simply wouldn’t know to do so, however it can very well be a culprit.”

Good church acoustics matters. Kingston Road United Church is a fine example of how acoustics made their worship space a place where people want to do activities with speech and music. A place where people want to be and where hearing the Gospel is better understood. At Kingston, you spend more time understanding what was being said rather than spending all of your time deciding what words were being said or just trying to hear.

If you would like to see more photos of this church, use this link. https://www.flickr.com/photos/jdbsound/sets/72157607243842820/

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Acoustics and the Gospel

Posted by jdbsound on May 21, 2019

Posted in Church Acoustics, Church Sound Systems | Leave a Comment »

Churches are Tools

Posted by jdbsound on February 18, 2019

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Church Sound and the Gospel

Posted by jdbsound on January 28, 2019

The goal of any worship space and the church sound system is not about loudness, gain before feedback, intelligibility, special sound effects for the organ or choir, having the most talented performers in the worship team, how many wireless mics, number of channels the mixer has or the name brand of equipment you have. The goal of a church worship space and the sound system is to be a safe place where the Gospel can be presented clearly and with little to no blemishes. Where every person within the worship space can hear and understand the Gospel as clearly as when having a conversation with someone only 4 feet away and sharing the Gospel. Anything less than that goal means that the spoken word can be corrupted in the journey between the minister’s mouth and ears of all those who are listening. The Gospel needs to be broadcasted and understood as clearly as reading God’s written words.

If your church has hot spots, dead spots, good sound in these seats and poor sound in those seats, then the Gospel is not being presented equally to everyone. If your sound system has technical problems during worship often, then it is a distraction, and it can make the difference of understanding something important.

The chart below shows tangible results when your worship and sound system are tested. There should be three tests.

The first is with a test speaker. It is a point source speaker that is small enough to mimic a person’s voice.

The next test is feeding a signal directly into the sound system and test those results. This test is just about the playback quality of your sound system.

The third test is to use the test speaker 30 inches from an open microphone such as a pulpit or any microphone on a stand and test the combined results of the worship space’s acoustics direct interaction of the sound system and open mics. You can also do a second version of this test and place the test speaker 4 inches from a microphone where the microphone is 45 degrees off axis.

If all three tests are not in the Yellow section, the results will let you know if it is your sound system, the acoustics or all of the above.  This is also a better indication predicting if upgrading your sound system will improve the results you are looking for. This is also a strong indicator that your worship space needs some kind of an acoustical management system

sti alcons chart conversion

You can get your church tested. It doesn’t cost much, and the results can save a life or many lives, depending on your point of view. As an independent consulting company, we offer church testing and results with no obligation to use our services in the future.

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What will give you the biggest bang for the buck in upgrading the Sound of your church?

Posted by jdbsound on May 2, 2018

This 300 seat church already had a reasonable high-quality sound system.  It was properly designed for the room and professionally installed. The acoustics were not that bad.  At least it was thought that the acoustics were not such a problem.  The outstanding issues they were trying to solve or improve were:

  1. Gain before feedback,
  2. Elimination of the few deadspots that were not solved from the previous sound system when the current new JBL speakers were installed
  3. Reduce sound spill from floor monitors,
  4. Better control of the drums (when using acoustic drums) and
  5. They wanted 3dB more bass from the Sub-woofer.

These are all reasonable reasons to upgrade the sound system.

Good Speaker System setup_s

The church was considered the following upgrades.

  1. Replacing the professionally designed and installed 12-year-old JBL sound system.
  2. They considered going for IEM (in-ear monitor) system for up to 8 people. (This would have included a new digital mixer)
  3. The church considered making an air-conditioned drum booth or get an electronic drum kit.
  4. They also wanted to add a second twin 15-inch sub-woofer.
  5. Estimated total cost, almost $26,000.00 installed.

This is what the church actually did. They changed the acoustics of the room.  They installed an acoustical Tube Radiator system.

What did they gain by doing this?

  1. The sonic quality of the existing JBL speaker system was greatly improved. The improvement was noticeable better regardless of how much equalization was added or when the EQ was bypassed. (Definite proof that the acoustics of the room changed the performance of the speaker system from the day they were installed.)
  2. All of the remaining deadspots were now gone. (This was never a speaker system problem as the right speaker system design was already installed.)
  3. The performance of the speaker system was such that picking up a person’s voice went from 12 inches to 35 inches with a Shure SM58 mic before feedback would show up. (Again, acoustics limits the performance of all sound system. Sure there are some very expensive gadgets that can improve gain before feedback, but such gadget can cost more than the material cost of the acoustical fix.)
  4. The floor monitors are now well behaved. No matter how loud the floor monitors get, you definitely need to and to add the front of house to hear clear sound. As it turns out, the overall stage mix dropped around 10dB without the performers even noticing as they were now able to hear the stage mix from the monitors so well at a lower volume. You could say that the monitor spill issue is eliminated.
  5. This eliminated the need for IEM’s.
  6. Since the drummer can hear himself now, he gradually started playing quieter after a few weeks. The need for a drum cage disappeared.
  7. The Single Sub-Woofer was now able to play 9dB louder without distortion. It would have taken 3 more sub-woofers to get the same loudness without distortion. That was equal to spending around $15,000.00. (Standing waves and bass buildup in the corners added air pressure onto the surface of the cones of the subs drivers. This added air pressure creates distortion. When the subs distort, the sound quality and maximum sound levels of what the sub is supposed to be able to do, can drop up to 15dB in many rooms.)

Aylmer EMC Church Pano 2017_ss

Other improvements

Congregation Singing.

  1. The participation of people singing went up from 30% to 75%. (When people can hear themselves and the other people around them, it encourages people to sing more.)  s a resulting, the congregation is singing 8 to 15dB louder. (The more people singing, the louder they will become.)
  2. No more distortion from the speaker system with playing louder which means the perception of loudness is greatly reduced. (Standing waves and bass buildup in the corners added air pressure onto the surface of the cones of the bass driver of full range speakers. This added air pressure creates distortion. When the bass drivers distort, the sound quality and maximum sound levels of what the full range speaker is supposed to be able to do, can drop up to 15dB in many rooms.)
  3. After two years, the congregation is starting to add harmonies to their singing. (That is what happens when people can hear each other.)
  4. Now when people stand up to give testimonies or prayer requests, people can hear them whenever they forget to use hand-held wireless audience microphone.
  5. The front of house stage mix is so much better. Now you can hear all of the performers without having to blast the sound system. (A well-diffused room can make the signal to noise ratio improve from 3dB to 25dB. As the signal to noise improves, the easier it is to settle into a high quality.)
  6. The worship space is now concert quality for any high SPL event, recitals, choirs or orchestral events.

The total cost of the acoustical system including painting the whole sanctuary. $1,400.00
Since this as a DIY project, the money saved went towards a better headset mic for the pastor and the new digital mixer. Total upgrade, $5,000.00. If the church contract out the installation of the Sono Tubes, add $5,200.00. That is still 60% of the cost of upgrading a perfectly good sound system if everything is contracted out or an 83% difference.

Conclusion

One can honestly say that fixing the acoustics had a far better return on investment versus just upgrading the speaker system alone. Upgrading the speaker system can never make the room sound better, improve congregational singing and it would have not been possible to delete the deadspots without adding more speakers on delays around the room. This transformation is typical of the new worship experience when a church gets the acoustics they are supposed to have. In the battle between acoustics vs sound systems, acoustics always wins. It’s Physics. Try moving a wall with air? You can’t. Change the wall and hear what happens!

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Romanian Church gets Excellent Acoustics and Reviewed by Professional Sound Magazine Article

Posted by jdbsound on August 6, 2016

Churches don’t often get Reviews for their Acoustics and Sound System.  Kevin Young did such a review of one of my projects.  The installation company was CS Acoustics from New Hamburg, Ontario.  Here is the full Professional Sound Magazine Article about the Romanian Pentecostal Church in Kitchener, Ontario Canada.  Please leave any comments or questions below.

Should you have a chance, when your in the area, visit this church.  The people there will give you a tour. Better yet, go to a worship service.  it is different, but worth the experience.  Kevin Young is a Toronto based musician and freelance writer.

Joseph De Buglio

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Can Acoustical Spreadsheets Save Your Church Acoustics?

Posted by jdbsound on June 20, 2016

There are dozens of acoustical spreadsheets that come with the promise of a viable acoustical fix.  Some sheets are for studios and some are for home theatres.  There are also other spreadsheets for larger rooms.  As rooms get larger, (as in Christian Churches and worship centers) those spreadsheets become less accurate.  Sure, the better spreadsheets adds more variable to compensate for the limitations, but the limitations are still there. Furthermore, with all of the spreadsheets, you have to add an additional line to include a fudge factor.  In some spreadsheets you need to add multiple fudge factor lines.

When a person tries to use an acoustical spreadsheet, they are only looking at one parameter of the rooms acoustics.  You are only looking at “time.”  The problem is, for churches, and I MEAN ALL ROOMS WHERE MORE THAN 150 PEOPLE GATHER TO WORSHIP – there are other parameters that are equally or more important than “time.” Acoustical problems always come in layers.  The minimum number of layers of acoustical sound management in a worship space is 4 layers.  As a worship space becomes larger, the more layers you have to attend to.  “Time” becomes only a fraction of the real acoustical problems you are faced with.  Obviously you can’t see them but you can measure them if you are trained to recognize when you hear them.

Romanian Church Kitchener Ontario Pano 1.jpgThe problem with spreadsheets is that they are not looking issues such as standing waves – and every church – regardless of shape has standing waves (unless the space is acoustically managed in the first place which also means this article is not for you.)  Spreadsheets are not looking at excessive noise from early and late reflections.  They are not looking at bass buildup often found in the corners of a room.  They are not looking at flutter echoes and full syllable echoes.  These are all sound effects than can’t be dialed out with equalizers, delays, algorithms and the next miracle digital gadget or software. (Yet that is how most sound system designers try to deal with room acoustics.)

Regardless of a persons acoustical training, knowledge or experience,  a spreadsheet cannot tell you when standing waves are masking flutter echoes.  A spreadsheet cannot tell you when bass build up is masking a standing wave issue.  A spreadsheet can’t tell you how much the early and later reflections are reducing music and speech intelligibility. 

All that a spreadsheet can tell you is how much “time” it takes for a sound to decay in a room either as an average number.  Some spreadsheets are much more detailed and they have been written as an attempt to calculate a room in octaves or by 1/3rd octaves.  If it was only that easy.  Measuring and calculating time is just a sliver of the acoustical signature of a space people worship in. 

church of our lady small.jpg

It takes a lot of training to learn Church acoustics.  The same applies to Studio Acoustics, Recital Halls, Concert halls and lecture halls.  All of these rooms have specific acoustical needs and they all require a unique set of skills to properly fix them.   

What makes a church so complicated is in how a church is used.  When a church is designed as a “church,” it becomes the most multipurpose space there is because of all the ways a worship space is used.  When you say you want the worship space to be more “Multi-Purpose” or more flexible in it use, you are actually limiting what a basic worship space is supposed to be able to do. 

At the end of the day, an acoustical spreadsheet is only a small snapshot into church acoustics.  It can’t help with congregational singing, it can’t help with a noisy stage for a praise and worship team or choir and it can’t help with drum issues or speech intelligibility. 

What often happens is with the spreadsheet, it will guide you to a solution that is based on absorption.  When an acoustical fix is based around absorption, you wind up “killing” the room for all music – especially contemporary music and congregational singing – and the masking effects of the other acoustical issues get worse.  Sure, the room sounds more tame than it was before, but the ability to understand speech is either no better than before or it has gotten worse.  Before you know it, everyone gets in ear monitors and all of the members of the worship team have to sign an insurance liability waver stating that they will not sue the church for any future health problems with hearing loss.  Seriously, is that the kind of acoustical fix you want? 

Front view of creekside church_edited-1.jpgThat is what you get when you turn to an acoustical solution based only on spreadsheet calculations.  To top it all off, the results are not much better when using computer simulation software programs.  Simulation programs only show you the results at one frequency at a time.  The computer generated image may be 3D but the patterns they show are only one frequency at a time – even when it is averaged out.  To see large room acoustics in a simulation, you need to be able to see the results in 4D.  Hologram can’t show you 4D images.  That ability hasn’t been invented yet.  You need to be able to see sound in 4 dimensions because all sounds are complex.  Every sound made on earth is a combination of wave lengths that are generated at the same time. Some parts of a sound are measured in feet and some in inches.  There is no way to visually see 100 Hertz, which is 11 ft long, and 4000 Hertz which is 3.5 inches long, at the same time in the same place yet in real life, that is what is happening with sound.  We all take sound for granted but the complexity of sound is extensive.

But doesn’t sound follow the rules of fluid dynamic and other laws of physics?  Of course it does, but only when you examine one frequency at a time and that frequency is never a pure tone.  It is always complex.  The only place you can measure and see a pure tone is in a machine like an oscilloscope and the moment you launch that sound into the air, it becomes complex.  Just as sound is complex, so are the acoustical fixes for churches. 

jdbsound test room.jpg

This is one way to test an acoustical solution before you recommend it to a church.  Have your own testing facility.  Whatever research is done in this room, it mathematical translates perfectly when it is scaled up into a larger space.

As a mantra, remember this:  for all Christian churches, acoustical problems come in layers and whatever fix you choose, it has to address all of the layers in one step – which is possible if you want an affordable fix.  There are many tools in the Acousticians Tool Box to fix a worship space. There are diffusers, resonators, traps and other devices that can address the needs of a church’s acoustics. There are also stand-alone electronic solutions that work in certain worship spaces. You need a lot of training to know which ones you need, what combinations you need and how to use them, and the last place you want to do your training and experimenting is on your customers. 

If you are doing Church Acoustics or trying to fix your own church, don’t do it as an experiment and you know it will be an experiment the moment someone in your committee say something like, “lets try this as see what happens.”  With those words, the acoustical solution is already doomed.  Experts like myself can tell you the results the second you decide to try something and long before you apply the materials. 

History shows that after a church spends it’s money on a thing such as acoustics, it will not be able to afford to fix any mistakes for decades.  If the results makes the room worse or no better than before, then you are subjecting the church members to more sound abuse for years to come and we don’t want that.  Spreadsheets don’t fix churches, good training and expert help does. (It’s also cheaper in the end to get expert help.)

Finally,  consider this.  The internet has become a treasure trove of knowledge.  That knowledge is often presented as expert information offering sure fire solutions.  I scan the internet often to see what is out there.  There is a lot of great information and there are a lot of myths.  When you collect all of that info, it only holds a fraction of the total knowledge about church acoustics.  If we were to put a percentage on it, the internet holds about 2% of the total knowledge there is for church acoustics.  The books hold another 8% of what there is to know about church acoustics.  Church acoustics is so complicated that often, a seasoned acoustical expert like myself will have to fix one of a kind acoustical fixes often.  Those unique fixes are often not shared because others may think that the one of a kind fix would be needed in every other church that has the same problem.  You can have 10 churches with the same acoustical problem but in every one the fix has to be modified because of the other variables that have to be included.  The rest of the knowledge about church acoustics is held by experts because the church community hasn’t taken ownership of that knowledge yet and there is no system in place for churches to share their experiences in order to avoid mistakes in the future.  What is missing is the wisdom in knowing what acoustical fixes will enhance worship verse what acoustical fixes exchanges one set of problems for another set of problems. Problems which holds back and undermines the real worship experience the church leaders want you to participate in. 

All church can have great acoustics and sound.  If each church denomination or independent church were to set-up their own “Church Sound Standards” for the performance of their sound systems and worships space acoustics, churches will become the kind of places where people want to go.  Once a standard is set, every church will have a Worship everyone can enjoy and appreciate. 

Joseph De Buglio

Acoustician and Expert in Church Acoustics.

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New Church Sound System Equalization Schedule

Posted by jdbsound on February 17, 2016

Notice to all Clients of JdB Sound Acoustics.

If you are in a new church building or you have done major renovations in your church, you will have to re-equalize the sound system many times in the first few years.  Here is the schedule you should follow.

  1. First-year – After the 1st month, 3rd month, 6th month, 9th month and 12th month
  2. The second-year – After the 4th month, 8th month and 12th month.
  3. Third-year – same as year 2
  4. The fourth-year – after the 6th and 12 months.
  5. Fifth-year – same as year 4
  6. Sixth to the seventh year, every 1 each.
  7. After that, do touchup to do loudspeaker decay drifts. (as speakers get older, the surrounds and cone can become stiffer and less compliant and that changes the frequency response of the speaker.  Equalization often compensates for mechanical aging.)

It takes up to ten years for most buildings to fully cure or longer depending on how much concrete and wood is used in the walls and floors.  For that reason, the humidity of the church becomes lower and lower as the church ages which also changes the sound of the worship space.

Also, depending on the climate area you are in, you should be re-equalizing your church sound system for each season.  more so the further you are from the equator.  If you have a digital processor or mixer, you can have presets for the room changes.

If your church is somewhat airtight and the HVAC system is properly designed to maintain temperature, even during worship services, the tuning cycle after 6 years can be relaxed for Displacement HVAC systems.

Joseph De Buglio

 

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How to Know if your Church has Good Acoustics – Part 1

Posted by jdbsound on February 3, 2016

Here is the first test you can do to know if you have good acoustics.  Have two people over 40 years of age standing 40 feet apart in the sanctuary.  Have one person on stage and the other anywhere in the audience.  With the room empty, the sound system off, with the lights on and whatever mechanical system that are on during worship, have the two people start a conversation.  The person in the audience area has to be understood by the person on stage equally as well as the person on stage to be understood by the person in the seating area.  This is important as all churches are used to hear and communicate from both ends of the worship space.

If the two people can converse for 5 minutes understanding each other, chances are your church is in good shape.  If hearing and understanding at 40 feet is not good, then move in closer until you do.  When speech becomes clear, that is the free field distance of the room.

If you can converse at 40 feet well, try moving further apart.  Keep moving apart until it become hard to understand or your up against the walls of the church.  If your able to increase the distance for understanding speech, then as you get further apart, the better the room most likely is.  This is step one.

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Connecting Cell Phones or consumer playback devices to a Sound System

Posted by jdbsound on November 8, 2015

Well, it finally happened to me.  After warning other people for years to use a Direct Box when connecting to a sound system, what did I do, connected an IPad to a mixer with an adaptor from 1/8th stereo to 2 channels of Balanced outs.  Then boom, the IPad headphone output was fried.  How?  The mixer had global Phantom power on all of the channels and because I went into the balanced inputs rather than line level 1/4 inch inputs, the voltage of the phantom power fried the IPad.

When I brought my IPad in for repairs, fortunately it was just the headset circuit that was damaged.  The owner of the repair store said that he had seen this problem before with other IPads, computers, portable CD players and cell phones.  With one person, their IPad was so damaged that the IPad had to have the main board repaired too.  Ouch.

Fortunately, there are a few direct boxes you can use that are purpose made for connecting from consumer to pro audio equipment.  What you want is a direct box that will give you 1/8th stereo and RCA two channel input to two channel stereo outputs via XLR’s.  Some model have a switch for stereo or mono outputs.  Pad switches and ground lifts are a must as well.

On this project we were firing up the speaker system for the first time. I needed stereo output and we used an older mixer that was in storage.  We hooked up to two channel and we were outputting to stereo (even though this will be a mono system.)  OK, I wanted to impress the people who were in the room at the time.  The demo and initial speaker setup was a great success but I happened to remove the connections from the mixer while the mixer was still on.  Not sure if the unplugging or the circuit that was heated up so much that when it cooled, it came apart that signed the connection failure but the next time I turned on my IPad to hear something, it would not work.

Either way, whether you are using a PC, Laptop, Cell phone, IPad, IPod or any consumer product that has 1/8 or RCA outputs, get a proper Direct box.  They range in price from $69 to $160.  That is cheap insurance considering that fixing my IPad cost about $100.00 and 7 days to get the parts to repair it.

For sound quality and extra insurance, get DI boxes that have transformers on the input or output side.

Joseph De Buglio

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Church Sound—Another Perspective On Lousy Audio & Related Issues

Posted by jdbsound on April 21, 2015

Found this article that is a good read.  Enjoy.

https://www.worshipfacilities.com/article/church_soundanother_perspective_on_lousy_audio_related_issues

Blessings

Joseph De Buglio

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Singing at 105dBa!

Posted by jdbsound on April 10, 2015

Congregations can sing at 105dBa.  At least that is what they do in churches that I have fixed and that does happen in other churches too, that perform well.  When they do sing that loud, what do you do?  Or, what do you do when the congregation is starting to drown out the sound system?

  1. Keep pushing the sound system to keep up with them.
  2. Keep the sound system at 90dB and let the congregations voices dominate.
  3. Lower the sound system FOH levels so that the congregation can enjoy what they are doing.
  4. Push the sound system to drown out the congregation as always regardless if the sound system is distorting or not.

Please tell us what you do when mixing.

Joseph De Buglio

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Question! What would you do to fix the Acoustics of this Church?

Posted by jdbsound on April 1, 2015

You have a church that seats 750 people.  It is a simple rectangle room with 30 ft walls, 40 ft to the peak, 80 ft wide and 140 ft long.  The reverb is 2.2 seconds at 300 hertz and 1.3 seconds at 2000 hertz.  An Energy Time Curve test show reflections over 30dB at one second on the ETC in the 300 hertz range.  The floors are carpeted and the pews are padded seats and backs.  All of the walls and ceiling are insulated drywall on 12 inch centers.  Basically there is about 30dB of excess energy at 300 hertz.  300 Hertz has a wave length of 3.75 ft. The church has already tried 4 different sound systems over 10 years and all of them were designed and installed by companies that are supposed to be the best in the business and they all started off saying that the room needs to be fixed – but church board members vetoed anything that would change the aesthetics of the room – but it was OK to hang 2 ugly line arrays which lasted only 6 months.

The church is now asking for another sound system but this time all of the professional audio companies turned down the project and said to the church don’t call us back until you fix the room.  Now the church board has relented and they are allowing acoustical panels to be mounted on the walls. What acoustical method or system would you use to fix the problem?  What will reduce energy 30dB in this space?

For all the walls in the church, between windows, doors and bulkheads, there is only 35% of the total wall space available to mount acoustical panels on. Major issues are – Stage noise, floor monitors as loud as main speaker system in the first 10 rows.  Only 20% of the congregation is ever singing. Speech intelligibility is below 85% in full range – if you roll off the sound system at 200 hertz speech intelligibility improves to 88%.  Gain before feedback is very poor after 3 or more microphones are turned on at the same time. Subs never really sound right.  Pastor hears echoes all the time off the side walls when preaching. Drummer can never hear himself or the other worship team members – even with the headset monitors. The are currently using electronic drums but they have tried drum shields and booths without much satisfaction.

The church used to have a 40 voice choir but they never sounded very good and now with over $150,000 invested in a praise and worship team with all the latest state of the art technology and higher trained sound engineers, they sound no better than what the choir did years ago – but they are better at entertaining people!

(note: this is a fictional church but this is based on actual events that have happened recently in three southern Ontario Churches.)

Joseph De Buglio

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Are Churches growing or shrinking?

Posted by jdbsound on March 23, 2015

Being in the church sound and acoustics business for over 33 years, you get around enough to see firsthand if the church community is growing or shrinking.  After all, when all of your income comes from providing a service exclusive to the church community, you would want to know if your services will become obsolete or not.

The question stands, is the church community growing or shrinking?  The short answer is – – – – the church community is growing and church attendance is growing.  Churches for the last 100 years have been growing on average about 10 to 14% every year.  That is the good news.  Unfortunately, that 10% growth annually is not the same as 10% of the population.

It seems that sometime around the mid 1970s the population started to grow in North America (and the rest of the world for that matter,) at a fast rate than what the church was growing.  In order for the church to grow at the same rate as the rest of the world, the church would have had to grow up to 25% annually.  So while the number of Christians in relationship to the total population is declining, the church continues to keep growing.

What also makes it harder to keep track of church growth is the number of breakaway churches that leave the umbrella of the denominations where church growth is not often recorded to any national data base.  In my work, I get to see both denominational churches and independent churches.  At the end of the day, it seems that there isn’t much differences between them.

Many people who were part of denominational churches often leave to get away from the institutional, the bureaucracy, the rules, the regulations and static growth burdened by years of complacency.  The problems I am hearing from people who have been going to these larger “growing independent churches” is that after a while, they complain about the same institutional, bureaucracy, rules, regulations and push for more growth burdened by years of complacency.  The difference is that they are inside the same bureaucracy that they left years ago and often don’t realize that they are now the cause of why people are leaving the independent churches are starting unsupported breakaway churches.  Who is keeping track of those numbers?

Then there are the non-registered home churches that are out there. There are thousands of them that average about 12 people each.  Who knows how many of these groups are there but, at the end of the day, overall statistics pegs church growth at 10 to 14%.  That is good news.  Will the “church” ever be more that 10% of the population again?  Most likely not.

By Joseph De Buglio

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Windermere United Church, Toronto, Ontario, Canada

Posted by jdbsound on March 18, 2013

windermere 3_edited-1

Completed their Sound System and Acoustical upgrade in Summer of 2012.

In the last year, all of the complaint about sound have been exchange for a growing church.

Click on the photo to see the full size image.
To see other images of this church please use this link – http://www.flickr.com/photos/jdbsound/sets/72157632984258138/

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