#alternator

When should I replace my Alternator in my car? I have am extra battery in the back powering the 2 sub woofers and amps I have one amp that's a class d amp it's 3500 watts at 1 ohm and another amp that's a a/b amp that's 4 channel at 225 watts rms per channel. I'm thinking about upgrading the...

Recently rewired my subwoofers to 1 ohm. Allows my DC Audio 1.2 k to output 1200 W (was only getting 750 W with them at 4 ohms). My mids and highs amp is outputting about 400 W. On the safe side total system power is 1700 W. I have big 3, Interstate MTP-35 in front, and XS Power 3400d next to...