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Why are my amps getting so FU**ING HOT!!!
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<blockquote data-quote="bbeljefe" data-source="post: 8144584" data-attributes="member: 655960"><p>More efficient in the case of amplifiers means less electrical energy is turned into heat energy. Class D amps run at about 75-80% efficiently at best and the 25-25% of current they use turns into heat energy. Since they only operate at about 35-50% efficiency at low volumes, that means more current is turned into heat energy than into mechanical energy and thus, they can run hotter at half volume. Class A and A/B amps only achieve about 60% efficiency. Another thing that runs cooler and at higher efficiency at full tile is cordless tools. This is because the only way to lower the battery voltage and make the tool run slower is to attenuate the voltage with a circuit that, you guessed it, turns current into heat energy. If you've ever had a solid state variable speed drill trigger out of the drill, you'll notice a thick copper or aluminum heat sink that's there for keeping the attenuator (trigger) cool. You'll also get more work out of a cordless tool at full tilt that at half tilt, because a lot less energy is turned into heat. It's physics, really. Energy turns into something, it doesn't just evaporate.</p><p></p><p>I realize it sounds counter intuitive but if you understand electronic circuits, it's quite logical.</p></blockquote><p></p>
[QUOTE="bbeljefe, post: 8144584, member: 655960"] More efficient in the case of amplifiers means less electrical energy is turned into heat energy. Class D amps run at about 75-80% efficiently at best and the 25-25% of current they use turns into heat energy. Since they only operate at about 35-50% efficiency at low volumes, that means more current is turned into heat energy than into mechanical energy and thus, they can run hotter at half volume. Class A and A/B amps only achieve about 60% efficiency. Another thing that runs cooler and at higher efficiency at full tile is cordless tools. This is because the only way to lower the battery voltage and make the tool run slower is to attenuate the voltage with a circuit that, you guessed it, turns current into heat energy. If you've ever had a solid state variable speed drill trigger out of the drill, you'll notice a thick copper or aluminum heat sink that's there for keeping the attenuator (trigger) cool. You'll also get more work out of a cordless tool at full tilt that at half tilt, because a lot less energy is turned into heat. It's physics, really. Energy turns into something, it doesn't just evaporate. I realize it sounds counter intuitive but if you understand electronic circuits, it's quite logical. [/QUOTE]
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Why are my amps getting so FU**ING HOT!!!
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