It could be the sub but it's more likely to be something in your house rattling. Get some bass heavy music, turn it up until you hear the rattle on every beat, and walk around to find out exactly where it's coming from. I had to fix shelves, heating ducts, one water pipe and a couple of picture frames before I got all the rattling under control. The bottles on the bar still rattle occasionally...

Not saying it *isn't* the sub (could be something wrong with it) but normally it's something else...


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8