Well, this struck me as a bit odd, and I was wondering if having it repaired would even be worth it. My Denon 1804 decided that it wouldn't produce sound out of the Front Left and Front Right speakers. I made no change to any hookups/wires/etc that might have prompted the problem. I ran the system setup for test tones and still could get nothing out of the FL and FR. The sub, however is still working fine. (I have no center or rear speakers.) Any thought about what to do? I purchased it a little over a year ago and already had to send it back for some repairs once (thankfully then under warranty).