I have a question: I purchased a PC 20-30 PC+ subwoofer back in August of 2003 based on everyone's recommendation here. I set it up and calibrated it back then, with the help of Tom V. Nothing has changed in my system since. I sent SVS an email this morning but haven't heard a response yet. I am a little sad about how the sub sounds now. Here's the basis of the email I sent them: __________________________________________________ ______________ Hi. I ordered an SV20-39 PC+ nearly 3 years ago next month. It has served me quite well, and I have been nothing but satisfied with it (until the last week). I have a problem with it now and I'm not quite sure why. I am 99% positive the driver is "blown" or damaged in some way. It still moves and makes some sound but those sounds are scratchy, sloppy, inaccurate, and (honestly) horrible. I don't know what to do! It's odd, too, because nothing has changed in my system since I've had it. I spent quite a lot of time when I got it with a SPL, talking with Tom V (and Ron S) about my room curve, output levels, etc. I had it set up and calibrated @ slightly above reference levels quite nicely. I typically watch movies at about 15-20 dB less than reference level on my receiver. While watching "King Kong" about 2 months ago, it made a strange noise. It may have "bottomed out" (I presume) - because I heard it "clack" once during a low frequency passage. I PROMPTLY turned down the volume and shrugged it off as being a movie which had an odd amount of bass (which isn't true - I've watched several with more than this in it's life). I didn't notice a problem again until last Saturday when I was watching "The Matador." I was watching at 15 dB below reference and during 2 unforseen and suddenly-loud passages it clipped / clacked / made noise. This isn't really a sub-killing movie either. So, I turned the subwoofer level down (on receiver) and the volume down and continued watching the movie. Last night when I put on some music, I noticed it sounded HORRIBLE. I thought something was loose. I felt under the bottom and found that if I put my finger on the rubber surround to the driver on one side it cleaned up the sound and if I put my finger on the same rubber piece on the other side (180 degrees away) it did NOT clear up the sound - and actually made it worse. Maybe something is damaged on one side? Voice coil? I fed it a solid low frequency signal to make sure something in the crossover wasn't wrong (allowing high frequency's through), and it still sounded just as bad. I've taken it out of service because I'm sure the problem is the sub. But I don't know what to do! I honestly don't feel like I've ever done anything to abuse it. I consider myself to be someone who takes very good care of my equipment. I have been pretty consistent in my movies and music taste and volume levels, and until recently it has never come close to bottoming out. I'm SURE I've thrown louder, lower things at it in the past - THE INCREDIBLES never ever had a problem, even at loud levels. And, I've put on some of those horrible "bass" CD's for some of my bass-enthusiast friends and had it humming loudly with no problems whatsoever. I was just wondering what I should do and what could have happened. It should still be under warranty I believe. FYI: The sub was fed via "Sub Out" on the receiver. The sub's amp was set at about 10:00 on the volume knob. The receiver was set at between 0 and +2 (depending on what was listened to). What do you think has happened?