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<blockquote data-quote="squeak9798" data-source="post: 2226804" data-attributes="member: 555320">Your understanding of ohms law is correct.But it sound like you are a little confused on how amplifiers draw current.In order to find the maximum current draw, you would need to know the efficiency of the amplifier.If the amplifier is 70% efficient at full power and outputs 2kw @ 14.4V, then the maximum current draw would be:2000/.7 = 2857 (total wattage draw of the amplifier)2857/14.4 = ~198.4A (total current draw of the amplifier)Not sure what you mean by &quot;constant&quot; draw....an amplifier only draws current based on the output.&nbsp; If the output is zero, the draw is essentially zero (very miniscule).If the output starts at 0, peaks up to 2kw then drops back down to 0 all within a matter of 3 seconds (such as an SPL burp), then the current draw would be zero, jump to 198.4A during those 3 seconds (assuming voltage and efficiency stayed constant), then drops back down to 0.For music, there is really no good way to judge the &quot;average&quot; current draw as it depends on way too many variables.&nbsp; Settings, type of music, level of music, etc etc.&nbsp; About the best &quot;guesstimate&quot; would be to expect an &quot;average&quot; output of about 30% of the amplifier&#039;s total output (this is just a very rough estimate, don&#039;t use it as fact).&nbsp; But then, efficiency is not constant, so at 30% output the amplifier&#039;s efficiency will be different than at full output.But the current draw will be jumping all over the board constantly...</blockquote>

[QUOTE="squeak9798, post: 2226804, member: 555320"] Your understanding of ohms law is correct. But it sound like you are a little confused on [I]how[/I] amplifiers draw current. In order to find the maximum current draw, you would need to know the efficiency of the amplifier. If the amplifier is 70% efficient at full power and outputs 2kw @ 14.4V, then the maximum current draw would be: 2000/.7 = 2857 (total [I]wattage[/I] draw of the amplifier) 2857/14.4 = ~198.4A (total [I]current[/I] draw of the amplifier) Not sure what you mean by "constant" draw....an amplifier only draws current based on the output. If the output is zero, the draw is essentially zero (very miniscule). If the output starts at 0, peaks up to 2kw then drops back down to 0 all within a matter of 3 seconds (such as an SPL burp), then the current draw would be zero, jump to 198.4A during those 3 seconds (assuming voltage and efficiency stayed constant), then drops back down to 0. For music, there is really no good way to judge the "average" current draw as it depends on way too many variables. Settings, type of music, level of music, etc etc. About the best "guesstimate" would be to expect an "average" output of about 30% of the amplifier's total output (this is just a [I]very[/I] rough estimate, don't use it as fact). But then, efficiency is not constant, so at 30% output the amplifier's efficiency will be different than at full output. But the current draw will be jumping all over the board constantly... [/QUOTE]

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