I found Profoam to be a MASSIVE joke. What costs less than $5 to produce is sold for multitudes beyond its' true value. My suggestion is to look at some of the various DIY designs if you are at all handy and go from there. They will perform WAY, WAY better and cost measurably less. Much like cork, Profoam is quite non-linear in its absorption ratios and can skew the tonal balance of a system. Sean
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