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Originally Posted by tiFreak  you could get a capacitor, my friend had this one with his 1000w amp and 2 12" subs and his battery never got run down |
A capacitor only helps in situations where the speakers/amps are drawing so much current at once that the charging system under supplies the amplifier and it shuts down. i.e. hitting a big 20hz bass note on a 1000W amp, or something like that.
alternator sizing has more to do with averages... average draw over a period of time resulting in overall charging or discharging of the battery.
it sounds like my alternator isn't putting out what it should, so I'll go for a rebuild.