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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
matchstikman OP
205 posts
 
Correction, I would like to add absorption on the rear wall and not diffusion.

Thanks in advance.
hotmailjbc
571 posts
 
hi, my room was very boomy and had standing wave problems. i put michael greene room tune pillows in the 4 upper corners and 4 24x 24 inch cathedral panels[absorption] on the rear wall. problem solved for my room. due to having magnepans i put diffusion on the wall behind the speakers. with conventional cabinet speakers i put absortion behind the speakers. there are lots of sites for information. aurelex has one as do many others. you could also build some. good luck. my room is 14 x 22 feet
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ncarv
983 posts
 
If there is room behind the couch, more books or records on shelves might do the trick.
stanwal's avatar
stanwal
3,147 posts
 
I don't think you need 4" panels behind you. They are mostly for treating bass problems. I would use 2" and a couple at least rather than one.
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