Serious question, does the $12 yoga mat under my sub actually do anything?
I read on a forum that putting a foam mat under a subwoofer would tighten up the bass, and I figured a $12 yoga mat from a store in Reno was a cheap way to test it. My sub sits on a hardwood floor in an 11 by 13 room, and before the mat, things like explosions in movies made the floor shake so much I could feel it in the couch frame. After two weeks with the mat, the rattling in the walls mostly went away and the low end sounds a lot cleaner, so I ended up keeping it. Now I am wondering if I should have gone with something thicker, like a rubber horse stall mat, or if that would just kill the bass altogether.