Last night I was awoken by a high pitched noise and some clicking. I walked over to the sub and the light by the auto on/active switch was flashing red. I switched it to active which made it stop so I could go back to sleep. However, upon watching a movie it still flashed red and the sub had a rhythmic thump (same timing as the clicking). I tried turning it off and on, same problem. There was no storm last night, no power outage, and the sub is connected to a surge protector/power center. Any thoughts as to what went wrong?
M80v3s, M5HP, QS4s, M22s, EP350v3, Denon X3700H
| 
