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<blockquote data-quote="Ed Lester" data-source="post: 4588348" data-attributes="member: 587479">We ran the HC2400s before. I did manage to get 1800w out of one. It was the flame amp. Very inefficient. about 55%, It was a current hog. You can measure efficiency very easily.At full power play a test tone. 60hz will do. Measure the DC voltage on the input and also measure the DC current draw on the power input. Multiply these numbers and it will tell you the wattage input.If I remember correctly the 2400 we tested had a voltage drop from 14.2 volt to 12.5 volts. So we use the 12.5v and multiply by the current draw which was like 260-265 amps. This gave us 3,312.5 watts of input.Now we measure the output. Measure voltage and current on the AC output to the speakers.I think we measured about 75volts AC and 24 amps output or so. This gave us about 1800w. and thats not even the RMS which would be about 1,272 watts because we multiply 1800 by the root mean square of .707.Now 1800 is about 54-55% of 3,312.5Not very good at all.</blockquote>

[QUOTE="Ed Lester, post: 4588348, member: 587479"] We ran the HC2400s before. I did manage to get 1800w out of one. It was the flame amp. Very inefficient. about 55%, It was a current hog. You can measure efficiency very easily. At full power play a test tone. 60hz will do. Measure the DC voltage on the input and also measure the DC current draw on the power input. Multiply these numbers and it will tell you the wattage input. If I remember correctly the 2400 we tested had a voltage drop from 14.2 volt to 12.5 volts. So we use the 12.5v and multiply by the current draw which was like 260-265 amps. This gave us 3,312.5 watts of input. Now we measure the output. Measure voltage and current on the AC output to the speakers. I think we measured about 75volts AC and 24 amps output or so. This gave us about 1800w. and thats not even the RMS which would be about 1,272 watts because we multiply 1800 by the root mean square of .707. Now 1800 is about 54-55% of 3,312.5 Not very good at all. [/QUOTE]

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