Im new to this power amp game, so I need some advice to get this thing running to top efficiency. I just picked up a QSC RMX 1450 in which I'll be using an RBI pre and plugging into a Carvin 1-15 cab set at 4ohms 600 watts and a Carvin 2-10 cab set at 4ohms 400 watts. I want the rig to use its power correctly and efficiently, so the big question, how do you plug this monster up? I dont want the lows wasted on the 10s and vise versa. This is quite confusing.