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General Car Audio
Amplifier efficiency question
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<blockquote data-quote="Unregistered" data-source="post: 7957"><p>A normal Class A/B amp is like everyone else said 40 to 50% efficent but a class D is anywhere from 65 to 88% efficent sometimes more depending on the make. Crossfire is around 87% percent wich is really good. Take a normal amp say rockford 1000.1 and a crossfire 1000.1D and run them at full power for a while. Put your hand on both and you'll get the jist of effeciency. The class D will be alot cooler meaning it turned the voltage into power basically instead of turning it into heat. An A/B amp can't handle the voltage as well and has to do something with it. The class D has a little higher distortion but for subs you'll never hear it. Now for highs and mids my personal expeirence in to run a highly efficent class A/B with low distortion for crisp clear highs. Rockford doesn't make amps like they use to but awhile ago I would have said them now I say Harrison labs or JL. Hope that helps.</p></blockquote><p></p>
[QUOTE="Unregistered, post: 7957"] A normal Class A/B amp is like everyone else said 40 to 50% efficent but a class D is anywhere from 65 to 88% efficent sometimes more depending on the make. Crossfire is around 87% percent wich is really good. Take a normal amp say rockford 1000.1 and a crossfire 1000.1D and run them at full power for a while. Put your hand on both and you'll get the jist of effeciency. The class D will be alot cooler meaning it turned the voltage into power basically instead of turning it into heat. An A/B amp can't handle the voltage as well and has to do something with it. The class D has a little higher distortion but for subs you'll never hear it. Now for highs and mids my personal expeirence in to run a highly efficent class A/B with low distortion for crisp clear highs. Rockford doesn't make amps like they use to but awhile ago I would have said them now I say Harrison labs or JL. Hope that helps. [/QUOTE]
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