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 Post subject: Acoustic panels
PostPosted: Sat Jan 14, 2017 6:08 pm 
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Joined: Sun Oct 14, 2007 2:32 pm
Posts: 375
Location: winnipeg, MB, CA
I noticed a few people with DIY acoustic panels and others with store bought. One thing I have noticed is most have been installed directly to the wall. I have read a few articles that indicated panels should typically be 2" thick and floated off the wall another 2" with some type of standoffs. So which is it, or more importantly does it really matter?


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 Post subject: Re: Acoustic panels
PostPosted: Sat Jan 14, 2017 6:25 pm 
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Joined: Wed Sep 13, 2006 7:45 pm
Posts: 549
Location: Athabasca, AB, CA
2" perhaps for reflection points,but 4" even 6" is better for reflections as the thicker they are the lower they will reach.
there is more to also density,gas flow ect.reflection panels have NO MEMBRANE on the insulation as to absorb more mid/highs.
My 6" panels(first reflections) are 4"away from the walls and same with the 6" bass traps that are around all my floor cornerstri corners and my back wall I have 12" panles with about 6"gap.
The gap will give help absorb MORE lowend,a freebee of sorts.


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 Post subject: Re: Acoustic panels
PostPosted: Sat Jan 14, 2017 6:46 pm 
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Joined: Wed Jan 25, 2006 7:39 pm
Posts: 1673
Location: Toronto, ON, CA
What you do is you leave the gap behind your insulation, so your frame touches the wall, but there is physical air gap between layer of insulation and the wall.


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 Post subject: Re: Acoustic panels
PostPosted: Sun Jan 15, 2017 6:12 am 
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Joined: Mon Jan 03, 2005 8:43 am
Posts: 936
Location: Burlington, ON, CA
My DIY install is a hybrid of what has been suggested.

Using 2 layers of 1.5 inch Roxul Comfortboard 80 and a standard 1x4 for framing gives me a 3 inch panel in a 3.5 inch frame.

I then spaced the panel about 1.75 inches off the wall with L brackets.

Thus a 3 inch panel that is effectively spaced 2.25 inches off the wall.

A gap is worth sorting out. I think if you want a large gap you may be better off mounting the panels on stands and playing with placement.

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 Post subject: Re: Acoustic panels
PostPosted: Sun Jan 15, 2017 7:24 am 
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Joined: Sun Jan 16, 2005 8:59 am
Posts: 2769
Location: Dundas, ON, CA
mcgsxr wrote:
My DIY install is a hybrid of what has been suggested.

Using 2 layers of 1.5 inch Roxul Comfortboard 80 and a standard 1x4 for framing gives me a 3 inch panel in a 3.5 inch frame.

I then spaced the panel about 1.75 inches off the wall with L brackets.

Thus a 3 inch panel that is effectively spaced 2.25 inches off the wall.

A gap is worth sorting out. I think if you want a large gap you may be better off mounting the panels on stands and playing with placement.


There appears to be some confusion about the ideal way of spacing the acoustic dampening material off the wall. Your porous fabric upholstered wooden frame needs to press directly against the wall to maximize the air gap's effectiveness. So three inches of damping material with a two inch air gap would require a frame made up of 5 inch boards. Otherwise you curtail the trap's lower-mid band absorption. We want to create a broad band absorber so as to avoid killing only the higher frequency reflections and thus making the room sound "dead".

Happy Trails!
MTB Vince

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