Is my car able to power my 500watt sub woofer? what changes should be make?

I want to put 2 x 250watt 8w7 JL sub woofer in my car, will my car power supply be enough to power all the stereo, amps etc?

Yes, the average vehicle on the market is equipped with roughly a 100 amp alternator, at 14.4 volts that’s in excess of 1,400 watts for your entire electrical system, or 12v @ 1,000 watts. If power consumption is your concern, consider purchasing a class D amplifier, they utilize energy more effeciently than ab classes. If you have any issues, it will be headlights dimming, consider purchasing a stiffening capacitor, 1/2 farad would be ideal for your application and would most likely resolve the issue. Aside from that, simply ensure that you have a professional install done, or if you do it yourself make sure your ground connections are solid, this will help preserve your power as well.

One Response to “Is my car able to power my 500watt sub woofer? what changes should be make?”

  1. Confucious Say on October 9th, 2011 at 1:40 am

    Yes, the average vehicle on the market is equipped with roughly a 100 amp alternator, at 14.4 volts that’s in excess of 1,400 watts for your entire electrical system, or 12v @ 1,000 watts. If power consumption is your concern, consider purchasing a class D amplifier, they utilize energy more effeciently than ab classes. If you have any issues, it will be headlights dimming, consider purchasing a stiffening capacitor, 1/2 farad would be ideal for your application and would most likely resolve the issue. Aside from that, simply ensure that you have a professional install done, or if you do it yourself make sure your ground connections are solid, this will help preserve your power as well.
    References :

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