I've searched the archives, and there are many threads on the topic of granite slabs (on top of and below) downfiring or down-ported subs. Is there any benefit to placing a front-firing, front ported sub on something other than pile carpeting? My current plan is to just put it right on the carpet, and weigh it down with a patio stone or something decorative. I'd like the input of the wise and experienced, though. The sub is an HTD level ONE 8" job.