try this
im runnning about 1000 watts with my orion amp and my phoenix gold amp
70 amp ac delco alternator, OPTIMA YELLOW TOP BATTERY, 1 farad cap
no problems whatsoever, even with lights on and 750 watts of bass pounding on my ground zero sub
i highly recommend the OPTIMA YELLOW top batteries, very nice
and u need 1 farad for 1000 watts at least, not sure how much ur running
make sure u havent jigger rigged the system either or it wont be efficient
i went out and bought all phoenix gold hookups (dist blocks, circuit breaker, 4 gauge wire, zeropoint battery terminal, etc) it makes a big difference and maximizes efficiency
yea like they said also, if ur amp cant handle 2 ohm mono, i wouldnt run it that way, my phoenix gold can do it easy 2 ohm mono, but im only pushing 1 sub
if hes running 2 ohm mono, there will be a shitload of current draw, and if the amp sucks then it will be less efficient and draw even more current then say my phoenix gold to put out the same power
but if the amp hasnt died yet and isnt getting extremely hot, then upgrade the electrical system with an AC delco alternator, a larger cap, and an OPTIMA battery and ull have no probs