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Old 06-05-2009, 05:51 PM
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JimN JimN is offline
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Originally Posted by CODY_YARBER07 View Post
I guess what my main question is, can I get by with the old alternator?
You'd need to list all of the accessories you want to run in order to tell. The power formula is P=IE, (P is Power, I is Current and E is Volts). Nothing is 100% efficient, so unless the amps state their draw vs output, assume they're about 60%. 300W/ch is 600W total and if it's 60% efficient, that's about a 70A draw if the voltage is 14.4, more if the voltage drops (which it does at low RPM and when the alternator and battery are under heavy load.
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alternator, amplifier, battery, stereo, wetsounds

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