I have an old quest sub (about 3 yrs, been out of HT for a while), that I haven't had the pleasure of enjoying due to neighbours (gotta love living in a townhouse). I'm getting a little excited for a new widescreen in the next few months, so I've been tweaking around my sound system to get it sounding good (It's loud enough for my purposes, Damn neighbours!). The sub is my only hiccup, it doesn't seem to want to work. It seems as though it's not getting any signal, it's hooked up to the subwoofer RCA jack on my old RCA receiver (gotta upgrade that soon to), and when I set it to auto on it doesn't turn on. I don't see the driver moving during movies or music. I'm wondering if the RCA jack on my receiver is NFG, or if it's SUB, I do have a passive sub hooked up to the receiver, but there's still no response when I unplug that. I'm pretty good w/ electronics, and would be ok cracking 'er open to take a look, but I wouldn't know where to start. HELP!!!