[Injundon]

I love seeing these kinds of threads filled with second hand, advertizing and misguided information. Extra batteries don't help, they prolong the inevitable. Kinetics low ESR batteries are good for competitions not daily use since they have crappy reserve times.

If both your amps combined pull 100 amps. then at absolute maximum volume wile listening to music your pulling at most the equivalent of a 25 amp constant load. that's at absolute max potential of the amplifiers.

Music is dynamic and not constant All the ups and downs and pauses between sounds etc. Heavy metal averages out to be around a 25% duty cycle, rap around 15-20%, BASS CD's around 40%. Most other music, pop, rock, R&B are around 12-15%. So that theoretical 100 amp draw, while listening to music is 25amps, if your listening to Slayer...at full output.

Keep in mind what I said above and I'll throw you another loop here. To gain just 3dB's you need to double your amplifier power. 3dB's is not a big gain by ay means. It's the human threshold for noticable increase in sound. This means that if you raised the volume about 2 dB's you wouldn't notice it get any louder unless you werepaing close attention. 10dB's (which requires 9.99x the power) is what sounds slike twice as loud to the human ear. So Chances are your only listening at around 1/4 power if you like it loud ALL the time.

Case in point. Your alternator and stock battery are sufficient. You most likely have a relatively poor ground to your amps. Liek a seatbelt bolt. which is painted steel. threading into a painted steel hole. Upgrading your battery to ground and engine to ground wires as well as properly grounding your amps will solve your issue and could have saved you a few hundred bucks.