Auralex Acoustics

Auralex Acoustics is the industry leader in acoustical treatment products, including acoustical absorbers, diffusors, sound barriers, construction materials, isolation platforms and complete room treatment systems. Let the experts at Auralex help you achieve world-class acoustics in any room

http://www.warhogprod.com/index.html?target=p_1350.html&lang=en-us

These are the nice deep diffusors, 2 feet by 2 feet each.
I have 20 of them total I paid $179 per box for from Sweetwater about 3 months ago (4 t-fusors per box, 5 boxes) and it costed me over $900 total after shipping. I have no tube tac so you would have to buy that yourself or use double sided tape or tacks or whatever.

How good are the Max-Walls for vocal booths? Does the foam hold up?

looking for deal on auralex