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    jklfd's Avatar
    jklfd is offline dB.v



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    This sound like a bad ground?

    I got my system installed a couple weeks ago, all runs fine except for 1 problem i have which i cannot figure out if its the amplifier or just the wiring thats causing this problem.

    So heres the problem.
    When i turn my volume to 25/35, after a while or when a loud *** bass hits, my subs would cut off. The amplifier power is still on but not feeding my subs any power. All the wires are connected correctly. The ground wire from my capacitator is hooked onto the chasis near my backseat. Note: its not grounded on bare metal either, its grounded on the paint.

    Does this sound like a bad ground?

    Im pretty new into car audio and i assume when i jack up the volume and when theres really loud bass that hits it doesnt ground properly so the amp doesnt feed the subs any power as some sort of protection or something.

    My subs will work after i turn off my car for a good 30mins.

    I hope this aint a amp defect b/c i dont want to go through the hassle to get it repaired since i bought the amp on ebay.

    500.1 amp powering 2 12" V3's
    4GA power kit.


    PLEASE HELP, and THANKS A BUNCH in advance.







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    Re: This sound like a bad ground?

    some one please answer this im having the EXACT same problem




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    dleccord's Avatar
    dleccord is offline CarAudio.com Veteran



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    Re: This sound like a bad ground?

    something like that happened to me a while back, i just redid the whole wiring for my amps and it worked.



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    azbass's Avatar
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    Re: This sound like a bad ground?

    Quote Originally Posted by jklfd
    Note: its not grounded on bare metal either, its grounded on the paint.
    .
    theres a problem right there.




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    Re: This sound like a bad ground?

    grounding on paint is bad. very bad.




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    Decipha's Avatar
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    Re: This sound like a bad ground?

    if you know its grounded to paint why wouldn't you remove the paint first? sounds like a power problem... do the lights dim bad? are you keeping a steady voltage at high volume? did you set your gains correctly?



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    Re: This sound like a bad ground?

    I was talking to a sales rep at tweeter that ive known for a while and he seems to know his stuff... he said that some amps cut the audio signal after the voltage drops past 11 volts. Does this sound right to anyone?




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    Re: This sound like a bad ground?

    um, is the amplifier going into protect?



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  9. #9
    pickup1's Avatar
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    Re: This sound like a bad ground?

    its getting hot and shutting off!
    may be defective amp,or the ground.make sure where its connected to the ground point,its nice and bear metal,cant have any paint on it.or try a different spot.
    when i had my civic,had to ground it to the rear strut bolt.




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    Re: This sound like a bad ground?

    On my 2500d i only see a power light... no protection light so i dont know if its going into protection or not...




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    Re: This sound like a bad ground?

    Quote Originally Posted by Decipha
    if you know its grounded to paint why wouldn't you remove the paint first? sounds like a power problem... do the lights dim bad? are you keeping a steady voltage at high volume? did you set your gains correctly?
    The amp does not go into protection mode, my lights do not dim because i got a capacitator. In the beginning i set my gains way too high on the amp, boost control, and HU which caused my amp to clip. (After a hard bass hits, the amp power light turns off, then back on, but never goes into protection) I took it back to the shop where i got it installed and they helped my lower my gains and my amp doesnt clip anymore, it just cuts off power to the sub.

    Instead of scraping the paint where my ground is to bare metal, should i take it back to the shop and have the pull the wire to the front of my car where the ( - ) battery terminal is? Or would scraping the paint off till bare metal better???

    This doesnt sound like a defective amp right? Just wiring issue?




  12. #12
    jklfd's Avatar
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    Re: This sound like a bad ground?

    Quote Originally Posted by pickup1
    its getting hot and shutting off!
    may be defective amp,or the ground.make sure where its connected to the ground point,its nice and bear metal,cant have any paint on it.or try a different spot.
    when i had my civic,had to ground it to the rear strut bolt.

    You got a picture of where u grounded it?




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    Re: This sound like a bad ground?

    I had the same exact problem with my amp. I re-did my ground wires and sanded the paint off the floorpan and used a ground foot terminal to a bolt thats attached to the frame, securely bolted that with a locknut and all is perfect. I can turn up my system really loud now and no problems.

    Get 1 of these





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    jklfd's Avatar
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    Re: This sound like a bad ground?

    Quote Originally Posted by AphexTwin
    I had the same exact problem with my amp. I re-did my ground wires and sanded the paint off the floorpan and used a ground foot terminal to a bolt thats attached to the frame, securely bolted that with a locknut and all is perfect. I can turn up my system really loud now and no problems.

    Get 1 of these

    can you get a picture of it installed in your car?




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    Re: This sound like a bad ground?

    Quote Originally Posted by jklfd
    my lights do not dim because i got a capacitator
    that is deff sig worthy lmao




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