Many amplifier manufacturers rate their amplifiers at continuous multi-channel outputs that exceed the current inputs? ie Sunfire Signature Seven is rated 400 wpc x 7 = 2800watts, continuous all channels driven. The power consumption is rated at 15amp @ 120 volts which is 1800 watts without efficiency loses. Since both power in and out are continuous, the wattage can translate to energy (joules)which is power x time. I thought energy is not lost or created, it just changes state, and some is obviously lost to heat. I can see peak outputs at these rates for short spurts due to energy storage devices, or continuous rates NOT all channels driven. Another example came up with the Definitive Technology reference powered subwoofer rated at 1800 watts to speaker, while the max cosumption is rated at 1500 watts. Although I have a basic recollection of this theory, my physics is rusty and I could be off base.
If anyone has an explanation to justify these numbers, please do. I hate to think the advertising is false or as missleading as it appears to be.
If anyone has an explanation to justify these numbers, please do. I hate to think the advertising is false or as missleading as it appears to be.
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