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  1. #1
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    Default Amp vs wire size

    Working the Jeep sound system. What size wire should I run to the speakers from the amp. Is there a rule of thumb for amp size and wires? Say I have a 400 watt amp and 4 speakers. It depends on the length of the run right? So if im running the sound bar vs the door speakers, they should be a bigger gauge so they get similar power? How do you know how much your amp actually puts out?

    Josh I think you've done a system or two haven't you?
    Last edited by denverd1; 03-01-2015 at 04:11 PM.
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    Default Re: Amp vs wire size



    Found this little chart. is there anything else I need to know? looks like the 14 or 16 (more like 20, the 18 gauge roll I have looks like pure beef comparing the two) gauge wire thats in there now isn't going to do it.

    Does solid core wire handle more load?
    Last edited by denverd1; 03-01-2015 at 04:05 PM.
    Wheelin' East Texas in a RED XJ

    RED 98 XJ with 4.5" lift, ZJ steering, front and rear locked on 33's
    cowl intake, Cobra CB, SYE, bumpers, 10K winch, lights
    ,___________
    //___l__,\____\,00_
    l_--- \___l---[]lllllll[]|
    (o)_)--(o)_)--(o)_)

  3. #3
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    Default Re: Amp vs wire size

    Solid wire is more resistance

  4. #4
    denverd1's Avatar
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    Default Re: Amp vs wire size

    bought 250' of 10 gauge. I'll let you fellas know how it sounds
    Wheelin' East Texas in a RED XJ

    RED 98 XJ with 4.5" lift, ZJ steering, front and rear locked on 33's
    cowl intake, Cobra CB, SYE, bumpers, 10K winch, lights
    ,___________
    //___l__,\____\,00_
    l_--- \___l---[]lllllll[]|
    (o)_)--(o)_)--(o)_)

  5. #5
    denverd1's Avatar
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    Default Re: Amp vs wire size

    Quote Originally Posted by autotech98 View Post
    Solid wire is more resistance
    more resistance? as in less current?
    Wheelin' East Texas in a RED XJ

    RED 98 XJ with 4.5" lift, ZJ steering, front and rear locked on 33's
    cowl intake, Cobra CB, SYE, bumpers, 10K winch, lights
    ,___________
    //___l__,\____\,00_
    l_--- \___l---[]lllllll[]|
    (o)_)--(o)_)--(o)_)

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    Default Re: Amp vs wire size

    Quote Originally Posted by denverd1 View Post
    more resistance? as in less current?
    The theory I was taught back in the dark ages is that the electrons only travel on the surface of the wire. So, more filaments means more surface area and there more capacity to carry the current and a higher amperage rating for the same size wire. Supposedly
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    Default Re: Amp vs wire size

    makes sense.

    what about romex? or is that a volt/amp/watt thing?
    Wheelin' East Texas in a RED XJ

    RED 98 XJ with 4.5" lift, ZJ steering, front and rear locked on 33's
    cowl intake, Cobra CB, SYE, bumpers, 10K winch, lights
    ,___________
    //___l__,\____\,00_
    l_--- \___l---[]lllllll[]|
    (o)_)--(o)_)--(o)_)

  8. #8
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    Default Re: Amp vs wire size

    Romex works the same. It is cheaper to make one strand than a bunch of little ones
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  9. #9
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    Default Re: Amp vs wire size

    Yep. What steve said

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