All- Still playing w/my EP500. (This thing is a beast), and when watching Mulholland Drive DTS dvd last night, I noticed that in the scenes that David Lynch just pumps ridiculous ambient LFE to the sub in the mix, at the low end, I can actually here the cone on the sub moving/rattling pushing the air? Is this normal, or is my cone loose or something? Not to mention it rattles everything in the entire apartment.

M60 VP150 2x QS8 EP500 HK 7300 DENON DVD-3910 Sony 60" SXRD