Quote:
Originally Posted by johnathanf1lm
I meant for where old tele man got the 2 to 5 horsepower from. I wonder the effect a 500 watt sound system has on fuel economy.
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Your 500W sound system doesn't draw that continuously. My wild guess is that it averages 120W, which is like running an extra pair of high-beams. Double that number (due to inefficiency in converting mechanical energy into electrical) and divide by 746 (electrical equivalent of 1hp), and you get 0.32hp extra load on the engine.