I have 4 bass traps/broadband absorbers for sale. $125 each or all 4 for $400.
They are 2'x4' and 7" deep.
These tame frequencies well below 100hz and have great absorption in the mid and high freqs as well.
These custom made traps can be mounted on the wall or ceiling, or stand on the floor (can be used as gobos/dividers).
The functionality and size of this design is akin to products such as Primeacoustic FullTrap (http://www.economik.com/primacoustic/fulltrap-broadband-absorber-and-bass-trap/) which goes for $390ea + shipping or the RealTraps "Fat" MondoTrap 2x4 (http://realtraps.com/prices.htm) which goes for $319ea + shipping.
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