Dark Grey convuluted foam


This is the stuff that comes sometimes in the bottom of equipment delivery boxes.
It looks like it would be great behind the stereo as a wall treatment.
All I have is a couple of 12 x 12 pieces.
Does anyone know where you can buy a couple of large pieces of this stuff?
128x128ozzy
The problem response area has to measure as the inverse to the foams absorption efficiency
over a pre measured frequency. If not you will have a suckout and lotsa deep dark lifeless soundstage. Try that balancing act on your next year off. Most room issues can be dealt with proper geometry and the use of natural materials. Solutions and products as mentioned that are not normally advertised, reviewed, shipped, sold or suggested by retailers of any type.

Recently there have been rooms described where instead of the vendor/designer suggesting solutions at the outset of constuction,the expert has sold at the end a truck load of foam and fiberglass band-aids as the cure. I feel this approach is is an error in judgement and a dis-service to both the customers ears and bank account.
What a coincident, I purchased a foam "kit" from Auralex today with the intention of treating a small room which I'm dedicating to audio. Haven't applied it yet as I'm figuring out the best placement. Also have a couple of absorptive panels. We'll see how it goes.
Ozz, my VMPS speakers have Di-Pole mid range and tweeter and that material comes with speakers in a saw tooth pattern to place behind the mids, maybe Brain C. at VMPS can give you his source.
Fire hazards??? That's why some clubs have had massive fires. Only certain foam will pass code. Most foam burns like mad. Spend real money on the certified stuff.
Thanks for the responses.
The stuff from Foam by mail looks like the stuff I was thinking of.
I dont know if I need it as much as I thought it would look cool behind my speakers.
I also thought the idea was to have a dead end behind the speakers and a live end behind the listener.
Anyway, now I am confused,by some of the comments, if putting this stuff on the wall behind the speakers will deadin the dynamics.