Hi all. This is somewhat related to a post I made in the Speakers/Subwoofers forum last week, but I now think it's a receiver problem so will expand on it here. The Problem: While listening to CD music, everything starts out OK. But after 3-4 songs, all the bass seems to disappear from the sound. The subwoofer goes silent, there is no bass coming from the fronts. The music retains the same volume, but has lost all the low range. The LFE/bass is also largely missing from digital sources such as DVD. The LFE indicator on the display is scaling the heights, but little if any bass is coming through the sub or the fronts. This seems to come and go, somewhat, as I was watching "xXx" the last night and while many scenes seemed kind of bass-light, the avalance scene and a couple other explosions still had a pretty good rumble from the sub and fronts. I started watching "Band of Brothers" the other night, which many have said is a very dynamic soundtrack, but there was little if any bass coming through my system despite the LFE levels bouncing all around on the display. Possible Cause: I'm not sure if this is related at all, but the problems I've been having started after this event, so it very well may be related. As I was dozing late one night (after some surfing HTF and listening to CD's), there was a brief power interruption. The music had stopped, but the receiver and sub were still on (I think, I'm not 100% sure). However, the power interruption reset all the equipment and rebooted my computer, waking me up. :b Could this interruption have caused a surge of some sort that fried my bass/LFE circuits so they flutter in and out? I checked all my settings and levels on the receiver and they seem to be where I had them before this problem started. Anyone have any insights into what may have happened? Are there any other possible explanations? The equipment has not been moved recently, so I don't think there are any loose connections. I have been somewhat concerned with heat buildup as it's setting in a semi-enclosed cabinet, but I've never had issues until the past week and it doesn't seem to get that hot inside the shelves. I do want to upgrade in the future, but it's a fairly new receiver (2-3 years) and it serves my needs for the moment so I'd rather not be forced into it if it could be a minor issue. Thanks!