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<blockquote data-quote="squeak9798" data-source="post: 4411510" data-attributes="member: 555320">I wouldn&#039;t worry about it since the difference in output in an unregulated amplifier due to a .6V variance in voltage wouldn&#039;t be enough to matter.That&#039;s going to depend on how tightly regulated the power supply is.&nbsp; A tightly regulated amplifier tested at 13.8V may gain nothing by going up to 14.4V input.&nbsp; Likewise, a tightly regulated amplifier tested at 14.4V may lose nothing going down to 13.8VBut as to &quot;underrating&quot; of an unregulated amplifier......If the amplifier was rated for 100w @ 13.8V, and it tests to be 100w @ 13.8V, I wouldn&#039;t consider that amplifier to be under or overrated.&nbsp; Sure, going up to 14.4V may gain a little in output, but dropping down to 12.5V would lose some in output.&nbsp; So if we tested at 12.5V would we call the amplifier &quot;overrated&quot;?&nbsp; No, because it tested to do exactly as specified; 100w @ 13.8V</blockquote>

[QUOTE="squeak9798, post: 4411510, member: 555320"] I wouldn't worry about it since the difference in output in an unregulated amplifier due to a .6V variance in voltage wouldn't be enough to matter. That's going to depend on how tightly regulated the power supply is. A tightly regulated amplifier tested at 13.8V may gain nothing by going up to 14.4V input. Likewise, a tightly regulated amplifier tested at 14.4V may lose nothing going down to 13.8V But as to "underrating" of an unregulated amplifier......If the amplifier was rated for 100w @ 13.8V, and it tests to be 100w @ 13.8V, I wouldn't consider that amplifier to be under or overrated. Sure, going up to 14.4V may gain a little in output, but dropping down to 12.5V would lose some in output. So if we tested at 12.5V would we call the amplifier "overrated"? No, because it tested to do exactly as specified; 100w @ 13.8V [/QUOTE]

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