Yup, I'm the guy looking for the used OEM Subwoofer in a slightly earlier post but someone mentioned to me that it could be the Amp that is bad? All I know is that with the subwoofer turned to the minimum setting (essentially off) the rest of the system sounds normal, even when turned up a bit. If I dial in the subwoofer, especially setting it to the maximum "plus 5" setting and then play something with bass, it just blatts and rattles but the other speakers all sound fine. Any advice as to whether it is indeed probably the subwoofer itself or the amp? Sorry for a second post about basically the same topic buit I'd hate to buy a sub only to find out it is the amp. Thanks!!