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Powering my car audio system - Car Audio & Video

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  • joe_87_ty Dec 23, 2008

    all will be going into my 1995 nissan hardbody x-cab

    cant decide between 2 12" kicker solo x's or a single 18" solo X on 2 ZX2500 amps.

    the stock alts on these truck are weak and need to be upgraded, respooling is not an option because u can only get 95 safe amps from the stock case.
    also planing to get dual batteries.

    so whet HO alt woul you prefer? wat kind of batteries should i go with?
    and what else would i need to get everything working smoothly

  • joe_87_ty Dec 23, 2008

    only a 2 farad cap for 5k watts? u need 1 farad per cap so ill need a 5 farad

    and btw 0 and 1/0(a.k.a alt guage) are both the same size wire

  • joe_87_ty Dec 24, 2008

    thomas all u said was to explain in more detail thats all i got...

  • Thomas May 11, 2010

    what is the problem? explain in more detail.


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Posted on Dec 23, 2008

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You need to have an alternator capable of putting out 200 amps. I would run 0, or 1/0 power wire and a 0 or 2 ground. Deep cycle batteries preferably two ran in parallel and a 2 Farad capacitor.

Posted on Dec 23, 2008

  • Victor Ramos Dec 23, 2008

    Im sorry I thought you were running one amp.


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Lights dimming

Your lights are dimming because your system is pulling too much current from your car. Your battery provides long-term sustained power, but your system wants to draw power faster than your alternator and battery can provide it. When the amp attempts to draw more amperage than the battery and alternator can produce, it creates a voltage differential in your system, which attempts to steal electricity from the rest of your system (like your lights). The most common solution for lights dimming is to add some level of adequate capacitance to your car. Capacitors store electricity and deliver it quickly to your amps as needed. Capacitors resist voltage changes by producing large amounts of amperage. This means that the capacitor(s) will provide the electrical bursts that your amps want so that it doesn't have to steal it from your lights. You can start out with 1.0 Farad, if the problem doesn't go away, add another one, and so on until the problem is gone. You cannot have too much capacitance, it's just an electrical buffer for your audio system.

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