I posted this problem on the Carvin discussion board but thought TB'ers could help too. I have a Carvin series 2 R600. Last Monday it was doing as well as ever, and then I didn't use it until Thursday, when from the start it wasn't getting very loud and sounded distorted. I tried both active and passive basses, and different settings (preamp tube on/off, graphic eq on/off, boosts on/off, bridged/unbridged, full range/bi-amped). I've come to realize that it is not a preamp problem, but a dead amp 2 (hi-frequency) problem. I plugged a different preamp into the amp 1 (low freq) return and got a good clean sound. But when I plugged the preamp into the amp 2 (hi-freq) return I got no response whatsoever. I tried a few different settings but nothing changed. Is the power-amp 2 dead or is it something I could fix? I was already thinking about getting a new power amp (possibly a DCM1000), is this probably my best option? This problem started (or maybe just the first time I noticed it) after I hooked up a RL210T (in the hi-freq) and the 15" from the Cyclops (in the low freq). This is the first time I've ever hooked it up like this. I wasn't running bridged so I don't think the amp would have a problem with the impedence load.