For some unknown reason, my Klipsch ProMedia 5.1's have a strange problem with the treble going out, leaving me only with very faint bass. I haven't pinpointed an exact cause for it, it seems to be totally random. The only way to get the treble back is to turn the speakers to headphones, or off, for a while and then switch back to main, and even still the treble will eventually go out. The klipschs are only about 8 months old, so I hope they're not going bad already (especially since I can't find the warranty info.) Any help would be greatly appreciated.