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    headunit ground loop

    I have Dual XDMAR6720 headunit, I have had a 1100 watt monoblock connected to it and 2 12s for about 6 months. Just recently I decided to put a 4 channel amp in and have noticed extreme engine noise coming through the speakers. For the past 2 days I have tried everything, moving the rca cables, putting copper wire around the rca outputs, and i have even grounded my head unit in 3 different places. I think it's the headunit because the engine noise stops when the rca cables are not plugged in, so it has nothing to do with the power wire, besides, they are on different sides of the car anyway. I also don't want to buy a ground loop isolator, I want to fix the problem, not mask it.

    The 4 channel is a boss ce404







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    Re: headunit ground loop




    dave
    ----------
    1999 Buick Park Ave Ultra
    Head Unit: JVC KWHDR720
    EQ: Audiocontrol EQL
    Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
    Sub Stage: Boston G3 10", 0.5 cu ft sealed
    Amp: PPI Phantom 900.4
    Rear Fill: Boston SE953 6X9's

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    Re: headunit ground loop

    Buy better equipment



    Headunit - Stock cassette player - Pioneer P9400
    Front Stage - Pyle 8 inch subs (1000 watt peak!!) - Polk DB6.5 (about to be CDT 6.5s)
    Rear stage - Deleted (stolen) - Deleted
    Sub stage - custom built 15 inch sony xplod (5k watt peak!!!) (huge box) - Two SA12's built by Corey
    Sub amp - Pyle 8000w peak!! (spl edition) - AQ2200
    Electircal - 35 amp alt from ford festiva upgrade, stolen battery, 28 gauge solder coil for my cable - Dual D34 Yellows, 1/0 trystar OFC, 135amp alt

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    Re: headunit ground loop

    Quote Originally Posted by maylar View Post
    You've read this, right?
    yepp, i've tried everything, I also just took the amp apart and grounded the rca outputs the chassis of the amp




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    Re: headunit ground loop

    Quote Originally Posted by SourDeez View Post
    Buy better equipment
    do you mean better cables or better brands?




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    Re: headunit ground loop

    Quote Originally Posted by leland_b View Post
    do you mean better cables or better brands?
    Brand

    Sorry not trying to hate on you personally, but dual is basically one of the worst headunit brands you can possibly consider.



    Headunit - Stock cassette player - Pioneer P9400
    Front Stage - Pyle 8 inch subs (1000 watt peak!!) - Polk DB6.5 (about to be CDT 6.5s)
    Rear stage - Deleted (stolen) - Deleted
    Sub stage - custom built 15 inch sony xplod (5k watt peak!!!) (huge box) - Two SA12's built by Corey
    Sub amp - Pyle 8000w peak!! (spl edition) - AQ2200
    Electircal - 35 amp alt from ford festiva upgrade, stolen battery, 28 gauge solder coil for my cable - Dual D34 Yellows, 1/0 trystar OFC, 135amp alt

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    leland_b's Avatar
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    Re: headunit ground loop

    Quote Originally Posted by SourDeez View Post
    Brand

    Sorry not trying to hate on you personally, but dual is basically one of the worst headunit brands you can possibly consider.
    yeah, i know, it was a gift for my 16th birthday, it has a lot of features so i never really looked at replacing it, but now may be the time.




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