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<blockquote data-quote="n2audio" data-source="post: 8684753" data-attributes="member: 540940">I will just throw out -- in general -- if you don&#039;t blast it that often your alt should be fine.Think of it this way -- your average 50-100w factory set up can honestly get pretty loud, right?&nbsp; You won&#039;t be drawing much more from your aftermarket &quot;1000w&quot; set up if you listen at similar levels.&nbsp; But when you start moving from loud to exceptionally loud your power requirements increase exponentially.&nbsp; It takes about a 10x power factor to yield sound that&#039;s 2x as loud.Even so -- say you&#039;re blasting your 1000w set up at near full volume - and drawing, theoretically, ~100A.&nbsp; It&#039;s actually nowhere near that much simply because of the nature of music.&nbsp; There may be bursts that require close to 100A, but when averaged out over a few seconds with the softer/quieter moments it&#039;s not likely your actual current draw would exceed 50A or so -- due to something called crest factor (wave peak power vs average).Impedance vs resistance is part of it, but crest factor is big as well.</blockquote>

[QUOTE="n2audio, post: 8684753, member: 540940"] I will just throw out -- in general -- if you don't blast it that often your alt should be fine. Think of it this way -- your average 50-100w factory set up can honestly get pretty loud, right? You won't be drawing much more from your aftermarket "1000w" set up if you listen at similar levels. But when you start moving from loud to exceptionally loud your power requirements increase exponentially. It takes about a 10x power factor to yield sound that's 2x as loud. Even so -- say you're blasting your 1000w set up at near full volume - and drawing, theoretically, ~100A. It's actually nowhere near that much simply because of the nature of music. There may be bursts that require close to 100A, but when averaged out over a few seconds with the softer/quieter moments it's not likely your actual current draw would exceed 50A or so -- due to something called crest factor (wave peak power vs average). Impedance vs resistance is part of it, but crest factor is big as well. [/QUOTE]

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