minor alternator whine in 3kw system

I'm curious why people think a ground loop isolator or breaking a ground is a "mask" and not a solution. If the "ground loop" is caused by voltage drops in the power path, how else would you solve it? (Note that until this forum, I thought ground loops were AC induced hum only! I'd rather use a different term for the DC voltage drops and their circulating currents.) A good GLI shouldn't effect sound quality much - not as much as compression (or 44kHz sampling). Or the analog speaker interface. (A bit of LOL there, but some seriousness too.)

A good way to cut down on frequency whine is separating your RCA's from your power wires. You can also get better ones that have multiple layers of shielding in them to further block the sound. As for the charging system, your best bet is do some math. You need to figure out how efficient your amps are, what their RMS ratings are and what each amp is drawing total. This site has a calculator that allows you to enter in two of three measurements to get the third. Its a good way to find out how many amps your stereo is drawing. You can then compare it to your alternator's output. http://www.supercircuits.com/resources/tools/Volts-Watts-Amps-ConverterNick C.