What battery should I use to power a DIY boombox using car audio components?
I've been looking at car stereo boomboxes (DIY of course) and had a simple question on how to power the stereo: WHAT BATTERY SHOULD I USE? I plan on running a Kicker ZX300.1 mono amplifer to power three 4ohm SVC subwoofers (wired down to 1.53 ohms), and a wallmart headunit that I suspect draws around 10amps of power connected to Kicker DS60's. I'm also fairly certain that the amplifier draws 30 amps of power (300 watts / 10 = 30amps). If this is correct does that mean I need to have a battery / set of batteries rated at 40 Ah? (I know I need a minimum 12v to run car audio equipment, the question is based on the Amps Per Hour rating of the battery). I Guess what I am asking is does the power source need to be rated at the "x" Amps/Hour where "x" = the total amp draw of the system? Thanks!