I have two 12" subwoofers in a double sealed enclosure running on a Rockford Fosgate Punch 160.2 AMP. I was just wandering how much polly fill should I use in each one to make my subs sound louder?
1/2 pound per sq ft seems to be the average. Wal-mart has it very cheap. Yes it would work in a bp box. The only thing it really does is fool the sub into believing it has a bigger chamber to work with then it really does.