So I just purchased an avalanche 15. From this board, I pretty much realized, I'd be an idiot if I didn't pick it up. I need your help though, I'm trying to make a 4 cu ft, sealed box for it. Trying to hit about 100db at 16 hz, which I can hopefully do. Trying to make it blend with my rocket 550s fronts. Anyone have any idea how to build a BOX????