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Car Audio Discussion
General Car Audio
doubling or tripling amp power?
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<blockquote data-quote="galacticmonkey" data-source="post: 7648784" data-attributes="member: 570857"><p>Power compression is when a subwoofer receives so much power that it works inefficiently. It starts turning too much of the power it is receiving into heat, and this alters the electro-mechanical parameters of the speaker for the worse.</p><p></p><p>Lets say a guy is competing in a class like Street B, which allows a competitor to run 3 10s, 2 12s, or 1 15 last time I checked. Say he runs a single 15 that can safely take 1,200w on music, and 2,000w on a burp. Lets also say that his burp score is a 146 @ 40hz. If he doubles power to 4kw, he will theoretically see a 3db increase, to 149db. Lets say that the subwoofer is starting to show some stress with 4kw, and he only ends up at a 148.3db. He can then double power again to 8kw, and since the subwoofer is so inefficient now, since its seeing so much more power than it can handle both mechanically and thermally, he only gets to 149.5db. In theory, he should have went from 146db to 149db to 152db. He gained less and less each time he doubled power. Why? Most likely power compression.</p><p></p><p>You shouldnt have to worry about that with such a small scale setup with low power though. If you want something a little better, you should be able to pick up a pretty middle of the road subwoofer, like a 12" Kicker CVR for around $40-50 on Craigslist. Then get a little 400w rms amplifier, and you should see a night and day difference from the setup you have now.</p></blockquote><p></p>
[QUOTE="galacticmonkey, post: 7648784, member: 570857"] Power compression is when a subwoofer receives so much power that it works inefficiently. It starts turning too much of the power it is receiving into heat, and this alters the electro-mechanical parameters of the speaker for the worse. Lets say a guy is competing in a class like Street B, which allows a competitor to run 3 10s, 2 12s, or 1 15 last time I checked. Say he runs a single 15 that can safely take 1,200w on music, and 2,000w on a burp. Lets also say that his burp score is a 146 @ 40hz. If he doubles power to 4kw, he will theoretically see a 3db increase, to 149db. Lets say that the subwoofer is starting to show some stress with 4kw, and he only ends up at a 148.3db. He can then double power again to 8kw, and since the subwoofer is so inefficient now, since its seeing so much more power than it can handle both mechanically and thermally, he only gets to 149.5db. In theory, he should have went from 146db to 149db to 152db. He gained less and less each time he doubled power. Why? Most likely power compression. You shouldnt have to worry about that with such a small scale setup with low power though. If you want something a little better, you should be able to pick up a pretty middle of the road subwoofer, like a 12" Kicker CVR for around $40-50 on Craigslist. Then get a little 400w rms amplifier, and you should see a night and day difference from the setup you have now. [/QUOTE]
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doubling or tripling amp power?
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