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    MTXman's Avatar
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    Headunit/Amp problem

    Whenever my friend puts a CD into his HU, his subwoofer amp just powers off. The amp works fine with the radio, everything's bumpin. As soon as he puts a CD into his headunit, it's a Pioneer I think, not sure the model, the amp shuts down and there is no power to the subs.


    I am not sure the problem here, anyone else ever have this problem? I havent checked the wiring in his truck yet, because he just told me about this problem. Can anyone shed some light on this situation?



    Subs: 2 RE Audio SE 12's
    Amp: MTX TA7801 @ 1 ohm
    HU: Alpine CDA-9884
    Fronts: Digital Designs DDCX 6x9's
    Rears: Kenwood KFC-C1739's
    Dash Tweets: 1/2'' Kicker KS13s
    Vehicle: Silver 2002 Jeep Grand Cherokee




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    Re: Headunit/Amp problem

    probably has the sub amp hooked to the power antenna lead and not the remote wire so when the cd player turns on, it shuts down the antenna therfore shutting down his amp. i'd check that.




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    Re: Headunit/Amp problem




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    Re: Headunit/Amp problem

    Allright cool, I read the whole thread, I will tell my friend to do that.

    So, he must have the blue wire hooked up as opposed to the blue wire with white stripes?



    Subs: 2 RE Audio SE 12's
    Amp: MTX TA7801 @ 1 ohm
    HU: Alpine CDA-9884
    Fronts: Digital Designs DDCX 6x9's
    Rears: Kenwood KFC-C1739's
    Dash Tweets: 1/2'' Kicker KS13s
    Vehicle: Silver 2002 Jeep Grand Cherokee

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    Re: Headunit/Amp problem

    opposite - the blue w/ white is usually power antenna - just blue is remote wire

    he's probably got the sub amp connected to power antenna - just like icetee said - turning on the amplifier only when radio is on and turning it off when he plays CD's - as if it's an antenna




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    Re: Headunit/Amp problem

    Quote Originally Posted by TheBaron929 View Post
    opposite - the blue w/ white is usually power antenna - just blue is remote wire

    he's probably got the sub amp connected to power antenna - just like icetee said - turning on the amplifier only when radio is on and turning it off when he plays CD's - as if it's an antenna
    x2

    blue/white is usually power antenna




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    Re: Headunit/Amp problem

    Quote Originally Posted by iceteebone View Post
    x2

    blue/white is usually power antenna
    /2.

    On every after-market head unit I've ever installed that included both a blue and a blue/white wire, the blue/white was the remote turn-on, NOT the power antenna wire. Some head units have only one wire, which may be blue or blue/white and almost always works as a remote output. But if both are present, the power antenna wire is always solid blue and the amp turn-on is always blue/white.

    You can verify by looking up any head unit's install manual online.




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    Re: Headunit/Amp problem

    Quote Originally Posted by KaeZoo View Post
    /2.

    On every after-market head unit I've ever installed that included both a blue and a blue/white wire, the blue/white was the remote turn-on, NOT the power antenna wire. Some head units have only one wire, which may be blue or blue/white and almost always works as a remote output. But if both are present, the power antenna wire is always solid blue and the amp turn-on is always blue/white.

    You can verify by looking up any head unit's install manual online.
    Yup.

    Here's the page in the manual for my XXV-01D that shows the wiring harness connections.

    See the two circled bits.....blue w/ white stripe for amps, plain blue for antenna.



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    Re: Headunit/Amp problem

    huh - i stand corrected....

    maybe i just got it confused - cause i've installed all of my headunits and never had the problem...

    interesting...




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