I was thinking recently. If my stock alt, which is rated at around 125 amps - is being used i'd say, about 85% for my cars electrical system - and I have a 600watt Amp which draws like 60 amps, would it be safe to say that my amp is never even comming close to putting out 600 watts? I mean, with the lack of power in all. Its not like my alternator is making power out of nowhere.
I wonder exactly how many people have this same problem and dont even realize it.