valko

My Klipsch set has run beautifully for eight years, but the past few weeks I've started noticing an issue. The upper channels seem to cut out on occasion, leaving only rumbling bass to the tune of whatever I'm listening to. It used to be infrequent and only happen in short bursts. Then it became more frequent and I'd have to actually turn the unit off and back on to try to kick the other channels back into action. Now I can't get any sound (other than bass) out of the unit. Are my speakers dead? Could this be a connector issue? A fuse of some sort? I'm not sure where to start looking!