Just installed 2 amps with 1 15" sub, and 6 6x9's. I also installed a new pair of walmart marine batteries that were dead when I bought them (but I charged it up)....when the volume is turned up and the bass hits (motor is off and stereo running off 1 battery), the system cuts out momentarily - I suspect this is due to the power draw of the amp when bass hits....is this normal?
I have not tested it while motor is running yet - the alternator running may solve the issue, but I want to be able to play it while motor is off...could it be the batteries are bad? Should the system be able to run off one good battery when motor is off and volume is cranked up?