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Message: <blockquote data-quote="LoneRanger" data-source="post: 536688" data-attributes="member: 540903">Alternator whine is a sure sign of a bad ground. If you haven't already, try making the ground wire as thick and short as possible and make sure you scrape the surface to which your equipment is grounded down to the bare metal.Overheating issues can be another sign of insufficient ground, but this is most likely not the problem. Try moving the amp somewhere where it will get plenty of fresh airflow and maybe turning your gains down a bit.If it keeps overheating and making alternator noise after you've made the adjustments I listed, you're likely the proud owner of a junk amp. On the positive side, they do make great door stops, paperweights and conversation pieces!PS: Analog multimeters are only $10 at wal-mart. A very sound investment!</blockquote>

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