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How much less amp draw for high frequencies?
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<blockquote data-quote="T3mpest" data-source="post: 8162699" data-attributes="member: 560148"><p>Actually it will make a difference. Get a DMM and test it out using pink noise if you don't believe me. When you reduce the frequencies going to an amp you area also limiting it's power output given the same source material. If the whole track has X amount of energy, cutting all the lows would reduce the output of an amp. A 1000 watt full rangeamp playing airforces will drop ALOT of power consumption if you were to high pass it at 200hz, effectively cutting out all the bass.</p><p></p><p>To answer the OP's question though, it won't make a heck of alot of differnece. Something like 1/2 the power in most music is located in the last 2 octaves up to 80hz. Most generally centered around 40hz, so crossing at 60hz vs 80hz won't be a huge difference. When you crossover at 80hz your reducing the level of 1/2 the bass, but not eliminating it. I'd imagine it works out to about 75% of it's max current draw at the same volume on bass heavy tracks. If your dealing with stuff that doesn't have as much bass, then it might not be as dramatic. Point is, I wouldn't count on it making a major difference. On music, most amps put out around 1/2 of their max current draw anyway since max current draw is based on an amp on full duty cycle. This is actually a fairly complicated issue, but not a critical thing.</p></blockquote><p></p>
[QUOTE="T3mpest, post: 8162699, member: 560148"] Actually it will make a difference. Get a DMM and test it out using pink noise if you don't believe me. When you reduce the frequencies going to an amp you area also limiting it's power output given the same source material. If the whole track has X amount of energy, cutting all the lows would reduce the output of an amp. A 1000 watt full rangeamp playing airforces will drop ALOT of power consumption if you were to high pass it at 200hz, effectively cutting out all the bass. To answer the OP's question though, it won't make a heck of alot of differnece. Something like 1/2 the power in most music is located in the last 2 octaves up to 80hz. Most generally centered around 40hz, so crossing at 60hz vs 80hz won't be a huge difference. When you crossover at 80hz your reducing the level of 1/2 the bass, but not eliminating it. I'd imagine it works out to about 75% of it's max current draw at the same volume on bass heavy tracks. If your dealing with stuff that doesn't have as much bass, then it might not be as dramatic. Point is, I wouldn't count on it making a major difference. On music, most amps put out around 1/2 of their max current draw anyway since max current draw is based on an amp on full duty cycle. This is actually a fairly complicated issue, but not a critical thing. [/QUOTE]
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How much less amp draw for high frequencies?
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