whats up guys, so im having some voltage drop in my electrical system.. just to give you guys some info i have about 340 Amp of current drawn from all my amps, i have a the big 3 all done with zero gauge wire stinger spp1200 front battery and then 1 run of zero gauge wire to a XS Power D3100 back battery and all amps are hook up to the back battery... i have a DC 270 Alt charging 15.1 Volts cold then 14.4V when hot. I know i should of got the 350 alt but i was a NOOB back then, well still are but learning more... when playing my system at full tilt my voltage drops to 12.3Volts on really bass heavy songs, or on normal songs at 13.8-13 sometimes 11.9 on High notes of bass (dont know why, since the subs dont move that much lol XD )... any help would be appreciated