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Car amplifier voltage/amperage?

post #1 of 6
Thread Starter 
Hey so I'm just wondering, would anyone know what voltage/amperage would be coming out of a amp rated at 420 watts rms @ 2 ohms? I'm trying to figure out what size of wire I would need to power my sub safely? Its a dual-voice coil so it'll have 2 sets of wires powering it?

Any car audio people out there?

I was using 12 awg wire but only for about 150 watts per sub, now I'm moving to a single sub running at 400-450 watts so I'm not sure if I need thicker speaker wire.
post #2 of 6
4-6 gauge for power and ground to the amp and 14 gauge to the sub should be just fine


i ran 3 subs off one amp just fine with a 6 (could be 4 i cant remember) gauge power and ground and 14 gauge to all 3 subs
Edited by whe3ls - 5/24/08 at 7:51pm
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by whe3ls View Post
4-6 gauge for power and ground to the amp and 14 gauge to the sub should be just fine


i ran 3 subs off one amp just fine with a 6 (could be 4 i cant remember) gauge power and ground and 14 gauge to all 3 subs
Thanks, I have 4awg running to the amp since it was already in the car from the previous owner, just curious, how much power is running to each of your subs?
post #4 of 6
Sq Rt (420 x 2) = 28.9 volts. 12awg will be fine.
post #5 of 6
i have a 500 watt amp, and i had three punch p1 at the time. they were wired in parallel , that the only way i could get them from tripping my amp. and atm im running a single punch dvc
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by whe3ls View Post
i have a 500 watt amp, and i had three punch p1 at the time. they were wired in parallel , that the only way i could get them from tripping my amp. and atm im running a single punch dvc
oh okay, i might go with 12 or 10 guage to be safe then, ill be running 400 watts to a single p3 dvc
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