| Ground
I realize this isn't a car audio forum, but I guess a bad ground can happen in the home too. I recently installed a new head unit that seems to have a bad ground when using the internal amplifiers. To remedy this, I purchased a 4 channel amp, with 4 gauge wire for the battery and ground (it's grounded to the sheet metal in the trunk). When the car is off, I can hear a slight buzzing, the kind that someone probably wouldn't notice, but would drive you crazy just because you know it's there. My question is, if there's a bad ground, is it an all or nothing (meaning either the amp will or won't turn on) reaction, or can a bad ground cause a little buzzing?
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