Was doing a little research for a potential new rig I'd like to throw together. Came across a review on the Orange OBC15 1x15 cab, since I already have one and want to get a second one, so this review was helpful. The cabs are 400 watt 8 ohm. The reviewer seems to be saying he runs the full wattage out of the power amp @ 4 ohms, I am just wondering if there is potential to damage the speakers by doing this. Looked up the specs for the QSC GX7, and it is 1200w @ 4 ohm with a single channel driven, and 1000w @ 4 ohms with both channels driven. Not sure if the reviewer was just mentioning the amp can do 1200w @ 4 ohms, or if he ran out from one channel with the cabs in series, or if he is utilizing both channels at the 1000w each @ 4 ohms to each 1x15. "I have a SansAmp RPM into a QSC GX7 (1200w @ 4ohms) to power 2 OBC115 cabs. I'm loud enough for 2 half stacks and a heavy drummer. These cabs are rated at 400w each, but they are efficient enough that my power amp doesn't have to push them very hard to produce high volume." This is pretty much the exact set up I was imaging, just want to avoid blowing anything up.