As I understand it, the performance of a bass trap is affected (primarily) by:
thickness, density, and mounting relative to wall with air space in between being better.
Let me know if this stuff I just found at Home Depot would be any good. Aesthetics not a concern as it will be hidden behind curtain and a bookcase. The material in question is blown cellulose insulation, made by Cocoon. It comes densely compressed in clear plastic, in a rectangular form. It measures 8"x20"x31" and weighs 28.5lbs, and cost $12cdn. A stack of three would fit nicely in a 8ft ceiling. By my calculations, the density (as packaged)is 9.93pcf. According to
www.bobgolds.com , OC701,703,705 are 1.5, 3.0, and 6.0pcf respectively.
To use, I would simply leave it in the packaging and place them diagonally in the corner, so that it is essentially an 8" thick panel. I would construct some wooden frame to strap the three stacks together so they can stand vertically.
i just wanted to hear what you guys have to say.
-is it too dense?
-does the plastic affect performance? Isn't being porous better?
