DIY Acoustic Diffusers


Anybody had success building these? Commercially built, they sell for a small fortune. So, I'm hoping some A-Goners have applied a little ingenuity and can recommend how I can buld some for my music room.
meagan02
The diffusers I use are foam version of RPG's. A hot wire cutter can slice these from the pattern of your choice. Mine were built by a local guy and cost was VERY low.

Here is a link to them in my system. Click the image to make larger so you can see a little more of it.

http://cgim.audiogon.com/cgi-bin/vs.pl?vaslt&1022712214&viewitem&o6

Here are the originals:

http://www.rpginc.com/projects/inst.htm
Thanks Bish and Albert.

Albert, doesn't foam act as an asborber? I would think you'd need something harder and more reflective like ABS plastic or wood. Where do you find a hotwire cutter?
albertporter
Is there a plan you used to determine the configuration of your diffusors? Also you indicated they were foam, what size foam pieces did you start with?
I use a DIY hot wire foam cutter with a beefy variable voltage dc power supply. Just Google "building a hot wire foam cutter," you'll get a load of sites telling you how to do it.
You could hunt around the [ decware.com ] site they have a kit for diffusors not to much money. Marc