Originally Posted by arnyk
Then try commercial products from sites that build their absorbers out of something besides foam.
Acoustic foam is made out of oil, and you know about what has happened to the price of that stuff!
Rock wool is made out of slag waste from steel mills, cotton batts are made from industrial and home waste. Glass wool is made out of rock and sand.
The plastic foam looks great and is easy to fabricate, while all the rest have to be faced with fabric or something like it to look decent.
Because the plastic foam is expensive, people who fabricate absorbers from it tend to go light on thickness and density to keep their prices looking competitive.
Then I might look at Gik acoustics. They seems relatively and reasonably affordable. I think I would have to send in a diagram of my room becuz there only a few places where their stuff would fit. I'd ask them if they can custom cut them for me but not sure if there is extra charge for this and/or if the price reduces and/or they re-cut the remaining cutted material.
5.1 small-room size: 800 ft³+ 54 ft³ corner door space
AVR: Denon 1712
Fronts: Pioneer SP-BS41-LR /Center: Pioneer SP-C21 / Rear: Pioneer SP-BS21-LR
Subwoofer: SVS PC12-NSD
Screen: Samsung UN46EH6070 46" 1080p 3D LED 240 CMR TV
Viewing distance: 7.33 ft