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<blockquote data-quote="n2audio" data-source="post: 8471370" data-attributes="member: 540940">Will it work?&nbsp; Yes.The real question is how long will it work.&nbsp; And that&#039;s the one nobody can answer.Efficiency should remain generally the same regardless of the gain setting.I&#039;ve never seen a plot on efficiency at various levels of output at the same impedance.Only full power at different impedance.Obviously, the lower the gain is set the less power the amp will produce, so that will always benefit your electrical system.Regardless, unless you&#039;re running the amp at very reduced output 2k&#039;s going to put a beating on a 90A alt.If you play it at half volume all the time it might last a while, but if you like an occasional blast session it wouldn&#039;t be reasonable to expect more than a few months out of that alt.It&#039;ll just run SO hot all the time -- and that is how an alt gets damaged.Of course there are cases that for whatever reason it works for a year or so, but to expect that isn&#039;t realistic.My last car had a 130A alt that burned up 2 times inBig batteries don&#039;t do much until the alt is maxed out.</blockquote>

[QUOTE="n2audio, post: 8471370, member: 540940"] Will it work? Yes. The real question is how long will it work. And that's the one nobody can answer. Efficiency should remain generally the same regardless of the gain setting. I've never seen a plot on efficiency at various levels of output at the same impedance. Only full power at different impedance. Obviously, the lower the gain is set the less power the amp will produce, so that will always benefit your electrical system. Regardless, unless you're running the amp at very reduced output 2k's going to put a beating on a 90A alt. If you play it at half volume all the time it might last a while, but if you like an occasional blast session it wouldn't be reasonable to expect more than a few months out of that alt. It'll just run SO hot all the time -- and that is how an alt gets damaged. Of course there are cases that for whatever reason it works for a year or so, but to expect that isn't realistic. My last car had a 130A alt that burned up 2 times in Big batteries don't do much until the alt is maxed out. [/QUOTE]

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