It doesn't dig particularly deep, probably better specs on the PSA and SVS offerings. Good quality sub in any case, well, if the guy built the kit properly I suppose....close enough to go get a demo?
"I realize that somebody playing free music isn't as commercial as a hamburger stand. But is it because you can eat a hamburger and hold it in your hand and you can't do that with music? Is it too free to control?" - Don Van Vliet (aka Captain Beefheart) discussing commercial success in the music biz