Since there's no HTiB specific forum, I guessed this should go here, if it should be moved, please let me know. I've had this HTiB systetm for ~2.5 years now, and I've been very happy with it for what it is. For the first time now I'm having an issue with it, that I'd like some help diagnosing. I'm not sure of the technical name for the problem I'm having, so I'll try to describe it as best I can. It is primarily with the surround channels in the rear. If I don't use the system for a short while (few days), one or both of these channels sporadically go dead on me. Only they're not really dead. With a pink noise test signal, their sound is extremely muffled and weak at my normal listening volume. Raising the volume causes them to "snap" back to their normal level after a second or two and I can lower the volume back down to my normal listening level. After that their sound is normal again and I get full surround effects until I don't use the system for a couple days, which then requires me to repeat the process to fix it again. I've determined that it's not any one speaker or channel failing, but beyond that I can't figure out what the problem is. My only/best idea so far is the wiring? I used the wires that came with the system, which are generally considered the weakest element of the system. Could poor speaker wires w/ corroded/oxidized contacts result in the syptoms I describe? I'm really confused with the transient nature of the problem; why does raising the volume fix the issue and allow me to listen at my normal (lower) volume level again? Is my theory about the wires sound, or do I have electrical gremlins in the amp itself? Thanks for any help with this.