I know, I know, but I need a cheap power amp for using once a week... But my Behringer mixer has been reliable... Short version: Bridged I could not get near enough volume before clipping the amp. So I ended up one side maxed out into a CXL-112. This was adequate. What did I do wrong? (Except buying a Behringer). Long version:So I bought an EP1500 and brought it home. It is huge, but not real heavy. I setup the amp to run bridged and plugged a passive P bass straight in. Both channels show signal so I think I have it bridged correctly. FYI: I could practice in the bassment(sic) at this level. So I plug in my ARTs Mic Pre. Volume seems ok. But then I run my iAMP at less than 1 in the bassment. Found out the cab I wanted to use has a bad speaker Switch to CXL-112, a very efficient cab. So I go to practice. This is a fairly loud rock trio. I set the mic pre to just before clipping and start up the amp. And I carefully turn up the volume, and up, and up, until the amp starts clipping :scowl: So I turn down the pre and crank it higher. I could not get enough volume So I turned off bridged mode and ran one side (260W). I was now able to run the pre much hotter. This was just *adequate* with the amp cranked and the pre set as high as I can before the amp starts clipping. After practice I turned bridging back on and tried using the XLR out from the pre to the XLR in on the EP1500 and it worked better, but I still did not get much volume compared to my iAMP. Bridged: DIP: ON OFF OFF OFF OFF ON ON OFF OFF ON or DIP: ON OFF OFF ON ON ON ON OFF OFF ON Unbridged: DIP: ON OFF OFF OFF OFF OFF OFF OFF OFF ON Am I doing something wrong, or is the amp fragged?