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    Trying to diagnose possible ground problem

    i have no problems unless i turn my system up so there is a lot of Draw..basically at a certain point the subs will cut out for a couple of seconds and come back on...

    im figuring this is a possible ground probem

    but could my ground for my 2nd bat cause this problem? my voltages are fine so im assuming its hooked up well enough but could a battery ground cause this? i dont have an IDEAL ground but it is solid i sanded the bed of my blazer real well and BOLTED my ground to it for my battery

    i then have my amp grounded to the NEG post of the batt...i think this is my problem ground if i have to guess but ive had it this way for a while no issues thing is i think my wires keep breaking at the EYELID i have 0 gauge ran to the amp and problem i have with these eyelids is that they seem to cut a lot of wires around them making the actual amount of wire directly connected to like probably about a 4 gauge

    could this be the problem? i figured that since the power only has a very short 2 or so inches that its like this and travels on less than the 0 it wouldnt be a problem but im beginning to think im wrong??

    I know i didnt explain very well i can get a couple of pictures if they will help

    Thanks Guys







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    Re: Trying to diagnose possible ground problem

    If the voltage reads good at the amp its not a ground.



    • 2010 Scion tC
    • Pioneer DEH-80PRS
    • JL 450/4v2 Active (Mid range, tweeters) JL 300/2v2 (Mid bass) DD M4(Subs)
    • Hertz HV 165XL
    • Hertz HT28
    • JL ZR800
    • 2 x DD 9512i
    • Singer 300 amp 15.1v bypass, 3 XS D3400s
    • Viper 5701 with Smart Start

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    Re: Trying to diagnose possible ground problem

    Quote Originally Posted by DDtC View Post
    If the voltage reads good at the amp its not a ground.
    I haven't tested ON amp yet can a DMM do this? My vehicles meter is what I was going by leading me to think the amps ground is the problem




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    Re: Trying to diagnose possible ground problem

    Quote Originally Posted by des343 View Post
    I haven't tested ON amp yet can a DMM do this? My vehicles meter is what I was going by leading me to think the amps ground is the problem
    Yes just stick the leads in the inputs and watch it as you play it



    • 2010 Scion tC
    • Pioneer DEH-80PRS
    • JL 450/4v2 Active (Mid range, tweeters) JL 300/2v2 (Mid bass) DD M4(Subs)
    • Hertz HV 165XL
    • Hertz HT28
    • JL ZR800
    • 2 x DD 9512i
    • Singer 300 amp 15.1v bypass, 3 XS D3400s
    • Viper 5701 with Smart Start

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    des343's Avatar
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    Re: Trying to diagnose possible ground problem

    Quote Originally Posted by DDtC View Post
    Yes just stick the leads in the inputs and watch it as you play it
    Okay well I checked them. A tried a song that I knew would cut out the voltages didn't drop much lower than 13 they did a little but the amp went into protect I tried a different song that had deeper bass and voltages dropped to under 12! Not cool but (normally I'd be driving as well still not cool) anyways the amp never went into protect voltages shot back up again until the next bass drop which they again dropped low and still no protect

    So why would certain songs cause this? If its not voltage drops?

    Thanks a lot for the help!




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    Re: Trying to diagnose possible ground problem

    Quote Originally Posted by des343 View Post
    Okay well I checked them. A tried a song that I knew would cut out the voltages didn't drop much lower than 13 they did a little but the amp went into protect I tried a different song that had deeper bass and voltages dropped to under 12! Not cool but (normally I'd be driving as well still not cool) anyways the amp never went into protect voltages shot back up again until the next bass drop which they again dropped low and still no protect

    So why would certain songs cause this? If its not voltage drops?

    Thanks a lot for the help!
    Its called imp rise. Different freq raise the ohm load. I dont know why it would protect with more voltage



    • 2010 Scion tC
    • Pioneer DEH-80PRS
    • JL 450/4v2 Active (Mid range, tweeters) JL 300/2v2 (Mid bass) DD M4(Subs)
    • Hertz HV 165XL
    • Hertz HT28
    • JL ZR800
    • 2 x DD 9512i
    • Singer 300 amp 15.1v bypass, 3 XS D3400s
    • Viper 5701 with Smart Start

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