I have pretty good power source, but.......................Have 2 Jl 750 hd amps, and a jl 600 hd amp. 2 hd's run w7's and 600 runs 4 speakers. Have a 200 amp alt, and an optima battery. Problem is that on bass heavy songs, at around 26 to 27 volume (which is f-ing loud btw, the voltage level gets to low to power one or more amps. This only happens at high volume, and no, I'm not idling when it happens, but I also don't want to have to stay above 3500rmps to keep system going, or light from blinking. LOL. So what will help?