#amps

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...

Im pretty new to car audio but i did an install of subs a few years back but then sold my car so i pulled the subs out and decided to hook them in my new car. My new car does not have preamp outputs on them and i do not plan on replacing the head unit. Im running 2 rockford P3s both of which...