now it dips in power, and shutting off for 30 sec, its really weird, but i have not rewired the speakers yet and have not got a crossover, im wondering if 14awg cable is good for all the speakers longest run about 100 feet with 4 ohm b52. im just wondering if three rmx 2450 is enough for 10 to 12 4ohm speakers? And how to hook up 4 powered subs to them. i want to get new speaker cable and a crossover. basically alot can go wrong, the yellow lights come on each amp and never go to red, but shuts off and drops in power. I run my mixer dj stereo in the rack mixer an american audio 8 channel mixer then xlr out that into a behringer eq stereo out that, into 1 qsc amp then i go out that into other amp and so on. any more ideas? thaks steve. ps do the yellow lights have to be on at all or just keep the gain knob almost all the way down and turn up the mixer output?