Man, it's crazy what forums you can find on the 'net these days.... So I have a weird problem... I have a Dahlquist subwoofer with the following specs... 8" high-power woofer with 1.5" voice-coil reflex rear ported front-firing cabinet Class-D (digital) pwer amplifier, 90W RMS - 250W peak power system optimised amplifier equalization This is hooked up through a single RCA digital sub cable to my Kenwood VR-6060 home theatre receiver... Here's the problem.....out of nowhere the sub starts 'popping'. It'll do it if I'm watching tv with the audio going through my home theatre or it'll just start popping in the middle of the night with the receiver off (no sound to the speakers/sub). When it does it it's a steady 'pop......pop......pop.......pop' I'm reasonably handy and if I'm directed to a solution that'd be great....I'm past the warranty now and really don't want to dip into the cookie jar to get another one yet. The set I bought was the Dahlquist Orbit 5.1 surround set....the sub is a model QX10T Just looking at the circuit board, nothing really appears to have been damaged, all looks new.