Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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Re: Question for Jon Risch re: acoustic panels

Posted by Jon Risch (B) on February 4, 2007 at 19:31:00

In Reply to: Question for Jon Risch re: acoustic panels posted by Deaf Ear on February 1, 2007 at 22:46:16:

Using the 2" thick OC 703, I would use at least three panels for a wall panel frame, for a total thicknes of 6", with a layer of polyester batting on the front.

However, I also recommend a wall panel size larger than 2 X 4 feet. Note that absorption of LF involves not only wall panel thickness, buit the total area/size as well. A panel that is too small in size is just as bad as one which is not thick enough.

You could double up on the panels, or cut them in half and alternate the overlapping seams, to create a wall panel that is larger, so as to match what I recommend, or you could exceed my size recommendation, by placing two panels side by side, and one across the top for a total panel size of 4 feet wide by 6 feet tall. This method requires no cutting of the 2 X 4 foot panels.

With acoustics, you reap what you sow, and if you do not use a thick enough panel, or a large enough panel, the LF absorption will suffer.
I am not saying that the wall panels need to be turned into bass traps (and I still take exception to the oft promoted notion that a couple of 2X4 OC panels with some cloth wrapped around them some how magically become bass traps! It just isn't going to happen), but you do want them to absorb down low enough to be able to properly control the 1st reflection points, as well as when used in the corners or in the center of the front or rear wall, etc.

Jon Risch

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