Okay, so I normally have my setup hooked up this way: Sansamp RBI into QSC PLX1602, whch is set with Bridged Mono off and Parallel Inputs on. From there it has one channel going to my Avatar 112 and the other going to my Avatar 410. I've been playing with volume only turned on on my 1x12 for a while now. I'd occasionally turn the volume up on the 4x10 and play through both, but I haven't tried that in a while. Today I tried it, and the 4x10 is completely distorting. The Clip light is coming on when playing with the QSC put at only two notches of volume turned on. I don't think I've changed anything at all on my setup, but something's definitely wrong now. Why would it distort and clip at such low volume? Any ideas? Thanks.