I get the feeling that he doesn't have a sub from the fact that he's turning the bass all the way up. I think it's time to look for a sub after you check out your speaker wires for shorts.

2xM80 VP180 2xQS8 2xM3 HSU STF3 LG 60PS11 Denon 3808 ATI 1506 LCR 2xATI 1502 Oppo BDP-83