Ground Noise
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Thread: Ground Noise

  1. #1
    Baller Poster
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    what to do
    Okay so i put my new amp in the trunk.. hook it up to a speaker back there ..hit the power and hear the low hum of the dreded ground noise..so first things first i move it around to a different spot..still making the noise..i move it to a previous grounding location ..never made noise with any of my other amps but now it is.. so i pull up the RCAs and put them down the middle ..[over the carpet just to see] STILL making noise

    any ideas on what to do? ground loop isolator??

    do you run just the power wire on 1 side and then rcas remote wire on the other side

    never had this happen on my other systems before..


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  3. #2
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    check your headunit...

    i've had the problem, that when i installed a deck (no amp at all) after you cram the wires back in the dash, the +12v can interfere with your signal wires, and you'll have alt. noise. I just retaped it all up and made sure they were seperated by a good amount of space.

    dunno if this'll help ya or not though
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  4. #3
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    always run your power wires seperate from your signal wires. make sure the ground is no longer than 3 ft. on bare metal, (has to be some solid good metal), with a ring terminal on the end. you could try a ground loop isolator, it may work, it depends on how back the noise you are getting is. good luck.
    im someone who just doesnt give a fuck, so dont waste your time trying to change that...

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  5. #4
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    did that still didnt work right i got a isolator and no more noise..appreciate the info guys

    Everythang I Drive Got Leather and Wood!!!
    [..:.::い 1979 Cadillac Coupe DeVille い::..:.]

    [..:.::い 1987 Cadillac Fleetwood Brougham い::..:.]

  6. #5
    GLASSHOUSE RIDER
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    MY SYSTEM IS DOING THE SAME THING, I PUT AN ISOLATOR THIS WEEKEND AND THAT NOISE'S STILL THERE, MY RCAS ARE ON ONE SIDE AND THE POWER WIRE IS ON THE OTHER SIDE OF THE CAR. I'LL CHECK THE GROUND ON MY AMPS, I KNOW I GROUNDED BOTH OF THEM SEPARATELY TO THE BACK DECK OF MY CAR. IS THAT A BAD PLACE TO GROUND THE AMPS? ALSO THE NOISE IS ONLY ON MY 6X9S ON THE BACK DECK.
    M&M HYDRAULICS & ACCESSORIES
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  7. #6
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    Originally posted by SMURF@Feb 23 2004, 06:50 PM
    MY SYSTEM IS DOING THE SAME THING, I PUT AN ISOLATOR THIS WEEKEND AND THAT NOISE'S STILL THERE, MY RCAS ARE ON ONE SIDE AND THE POWER WIRE IS ON THE OTHER SIDE OF THE CAR. I'LL CHECK THE GROUND ON MY AMPS, I KNOW I GROUNDED BOTH OF THEM SEPARATELY TO THE BACK DECK OF MY CAR. IS THAT A BAD PLACE TO GROUND THE AMPS? ALSO THE NOISE IS ONLY ON MY 6X9S ON THE BACK DECK.
    How many amps do you have, and which amp is on what? If you have an amp just on the 6x9's you could have a problem in the amp. As far as the ground goes, that should be fine but it may not be.
    Looking for Sundown Audio? SundownOnly.com

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  8. #7
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    I have 2 amps, one crossfire 2 channel for my bazzooka, and one crossfire 4 channel for my 2 6x9s. My system used to work properly with no engine noise. I've had the same stuff for about a year and a half and it never did that, untill recently, after i had some major engine work done.
    M&M HYDRAULICS & ACCESSORIES
    520 SOUTH MOUNTAIN
    ONTARIO, CA. 91762
    (909) 933-9191
    SPECIALIZING IN FRAME REINFORCING, INSTALLATION, PARTS & SERVICE.
    ASK FOR CHICO OR JOE

    !!!TELL THEM SMURF SENT YOU!!!

  9. #8
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    Originally posted by SMURF@Feb 24 2004, 03:30 PM
    I have 2 amps, one crossfire 2 channel for my bazzooka, and one crossfire 4 channel for my 2 6x9s. My system used to work properly with no engine noise. I've had the same stuff for about a year and a half and it never did that, untill recently, after i had some major engine work done.
    Check your ground wires from the motor to chassis, and battery to chassis. They may not have secured them properly which is causing the noise. You probably have noise in the 2 channel you just can't hear it because its low pass.
    Looking for Sundown Audio? SundownOnly.com

    "Lowriding was developed around stealing anyways." - AndrewH

  10. #9
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    You're probably right, i can't hear the noise in the bazooka.
    Last night i was going through it, checked all the wires, made sure the power was separated from the RCAs, and i also relocated the ground of the 4 channel, and i keep hearing the fucking engine noise.
    I also noticed that the battery ground is bolted to the engine block, is this bad?
    When you say the ground wires from the motor to chassis, which wires are you talking about, where would they be? Sorry i never really fucked with my sounds before.
    M&M HYDRAULICS & ACCESSORIES
    520 SOUTH MOUNTAIN
    ONTARIO, CA. 91762
    (909) 933-9191
    SPECIALIZING IN FRAME REINFORCING, INSTALLATION, PARTS & SERVICE.
    ASK FOR CHICO OR JOE

    !!!TELL THEM SMURF SENT YOU!!!

  11. #10
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    Originally posted by SMURF@Feb 24 2004, 07:38 PM
    You're probably right, i can't hear the noise in the bazooka.
    Last night i was going through it, checked all the wires, made sure the power was separated from the RCAs, and i also relocated the ground of the 4 channel, and i keep hearing the fucking engine noise.
    I also noticed that the battery ground is bolted to the engine block, is this bad?
    When you say the ground wires from the motor to chassis, which wires are you talking about, where would they be? Sorry i never really fucked with my sounds before.
    On most cars, there is a ground wire from the engine to the cars body/frame, and another ground from the battery to the body/frame. The motor is a good ground, but do you have a ground ONLY from the battery to the engine? If so, add a ground from the battery to the body/frame. The engine has motor mounts, which are rubber and dont conduct electricity, therefore your entire body isn't a good ground. As far as the wires from the motor to the chassis, they could be anywhere around the engine, different on every car.
    Looking for Sundown Audio? SundownOnly.com

    "Lowriding was developed around stealing anyways." - AndrewH

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