After a fruitless search for 703 type product in the LA area, I ordered some Auralex mineral fiber board, the 4" thick variety. Although stupidly expensive (final cost of about $30 for each 2ft x 4ft piece @ 4" thick) it is a remarkably good product.
I just unpacked the box and stood the three pieces up against the wall in my studio and noticed a remarkable improvement already. Can't wait until I have the stuff properly positioned and mounted.
The price makes it a product of last resort for those who just can't find any 703 (or similar). But if you do end up ordering the Auralex board, you won't be disappointed.
steve
lex125@pacbell.net
Auralex mineral fiber board
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