pioneer avic d3 humming noise!!!
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This is a discussion on pioneer avic d3 humming noise!!! within the Electronics/Car Audio forums, part of the Interior Mods category; well i got a avic d3 headunit and after installation it started f***ing up with noise. there was a noticeable ...

  1. #1
    Registered User Drummer829's Avatar
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    pioneer avic d3 humming noise!!!

    well i got a avic d3 headunit and after installation it started f***ing up with noise. there was a noticeable humming sound coming from the front tweeter and it got louder as the rpms rose. i do have a 4-channel amp. ive read on some rsx forum to bypass their stock amp, but i dont know really how to do that, and also if its different with the subarus. ive also read a bunch of other crap and was wondering what you other subbie drivers did to fix this...also every so often noise shifts from all speakers to just my front tweeters and my back speakers

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    humming sound

    check your bypass. most humming sound can be fixed by redoing the ground. check the headunit ground make sure it is to sanded metal and the same with the amp ground. make sure the power and the ground is the same size wire and the ground is no longer than 12 in. if that does not work switch out amps and see if it is still doing the same. check batt.and alt. ground clean and reground .

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    Registered User Drummer829's Avatar
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    well my buddy is a certified installer guy and he hooked it up for me, but were gonna take another crack at it today, but also would a ground loop isolator work by any chance?

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    I have never had to use one . i worked at Soundwaves in Dayton oh. in the mid 90. i would do these step no problems. I still have none.

    I am running
    1 Clarion pro 9175 old
    2 autotec 750 ss
    2 Alphasonik pma 300hc
    4 Power Acoustik mofo 10
    3 Clif Designs comp.set doors and deck
    1 Dayton Alt.
    1/0 Monster and cont.
    Power Acoustik pre amps
    Not the best stuff but my stuff. i have no noise unless something goes bad and just find it and replace it . let me know what it was so i can learn some more. good luck

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    Registered User Drummer829's Avatar
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    well i dont know what most of those things are lol..but im thinkin of just takin out my amp and running everything to the headunit, and for the humming noise my buddy told me it was a ground problem with the alternator which is why it gets louder as the rpms rise

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    What you want to do is take the head unit and ground that mother down, i mean ground it from one point on the chassis and multiple points on the headunit, pioneers are notorious for humming if it is only humming on the subwoofer output then take the outside part of the rca and ground that also

  8. #7
    Registered User Drummer829's Avatar
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    that sounds like a plan..but it sucks also because only my left side works and only the front tweeter and back speaker..the right side kicks in rarely for like 10 seconds that fades out back to only left side

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