audio system question please help

[dlcpsycho]

so if i install the second battery i still need a new alternator to keep the battery recharged? and if so would a 200amp alt be good? and does anyone know wheter or not a alternator that was in a 1996 jeep would fit one in a 1993? thanks again for the help

[PaulD]

a second battery will only be an additional load once the car is started, since all the power will be coming from the alternator

[AirAllen01]

See, I don't know too much about alternators and batteries and the connection to the stereo. All I know is the battery supplies the power and the alternator supplies the amps, but I do believe a 3 farad cap should be plenty. You will probably only use 1-farad of the capacitor for your speakers and amps. The rest of your extras can use the left over 2-farads. My 1600 @ 1-ohm rms amp uses 4 30-amp fuses to run and my 75x4 amp uses 1 40-amp fuse. I know that I don't have a 200 amp alternator that came with my F-150, and I know that I will never pull the total 160 amps from both of my amplifiers. All I have is an Audiobahn ACAP1 (1-farad digital readout capacitor) to keep from draining my battery and killing my alternator, so I would believe you don't need an extra battery, just use the 3-farad cap.