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  3. 1315873265

Acoustic Treatment on rear wall

First of all, I don't have a state of the art home theater system. It is one I built myself and I think it does fairly well for a budget system. Currently, I have most of the corner issues addressed with either book shelves or plants. I don't have a problem with the bass. The first reflection points are either addressed with an open door on one side and a coat rack on the other.

However, I would like to address reflection off the wall behind the couch where I sit. I am a few feet away from the rear wall and I would like to put some kind of diffusion on that wall. The question is how many panels? I thought I would put up a 24 X 48 x 4 panel. Would that be enough for at least some kind of diffusion from behind?
matchstikman
rrog
1,958 posts
 
Look on the ASC (Acoustic Sciences) website. I have used 8 of the 9"x 36" tube trap half rounds behind the listening position with excellent results. ASC also offers the Matrixpanel for this purpose. The Matrixpanels come in two sizes, 24"x24" and 24"x48". If you decide to make panels yourself make sure you use only natural materials. Synthetic materials will cause a frequency imbalance.
buconero117
2,311 posts
 
a single Echo Buster, about 48x4 should do the trick.
matchstikman OP
205 posts
 
Rockadanny, I was considering a single GIK 244 on the wall behind. I was thinking that not only would it kill the reflection back there but might do a pinch of trapping some bass even though I don't really have a bass issue. I was wondering just how many I would need and it looks like either 1 or 2 would do the trick.

The space behind me is not big enough to put a book shelf or anything like that.

Thanks everybody...
rockadanny
1,222 posts
 
Matchstikman - Yes, one or two GIK 244s may work well for you as do for me. Good luck!
rhljazz
1,250 posts
 
I have a large number of GIK panels and have experimented a lot with the back wall. I currently use one 244 panel way up high in the corner (vaulted ceiling) and three echo buster panels mid wall. Since you say you don't have a bass problem, I think the 244 panels will over-damp. The 242 panels would be the safer choice.
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