The reason I ask this is I purchased a 200 amp high output alternator that apparently puts those 200 amps out at 1200RPM. I upgraded my wiring to 4 gauge, which should be more than enough for a system that, in the worst case scenario, can draw about 110 amps.
Now, the problem is my voltage still drops when my amp draws anything more than about 30 amps. It drops harshly when my subs are drawing the most power possible (about 80 amps, accounting for inefficiency of the amplifier). When the subs are maxed the voltage can drop as low as about 10.6V, and it keeps dropping the longer I play the tone.
Does this mean the high output alternator I bought isn't really high output, or could a bad battery cause the alternator not to be able to flow all of the needed amps through?