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  1. #1
    Matty A4 TDi Sport

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    Aftermarket head unit!

    Hi,
    Have just fitted Aftermarket head unit in my a4 b6! all is ok apart from a buzzing noise coming through the back speakers!

    Any ideas?

    Thanks
    Audi A4 B6 1.9 TDi Sport 180bhp In Dolphin Grey. Kei Force 10 Wheels. VDO Boost Gauge. JE-design, ABT + Vortex Body styling. HID's, AP coilover suspension, turbo back exhaust with twin exit pipes RS4 style The Stealth look is well under way and not far from compleat

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  3. #2
    1st Gear

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    Has the car got a fully amped system from bose ? And how old is the headunit ?

  4. #3
    Matty A4 TDi Sport

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    It had the concert system, so dont think its fully amped, but there is a amp in the boot! its a few years old! jvc exad! sounds alot better but just have this noise!
    Audi A4 B6 1.9 TDi Sport 180bhp In Dolphin Grey. Kei Force 10 Wheels. VDO Boost Gauge. JE-design, ABT + Vortex Body styling. HID's, AP coilover suspension, turbo back exhaust with twin exit pipes RS4 style The Stealth look is well under way and not far from compleat

  5. #4
    Moderator

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    No you don't have Bose. You have just used the wrong adapter to link into the rear/sub amp. You have used the PC9-401 speaker input adapter. This uses a really cheap & nasty high to lo converter to take the speaker outputs of the JVC down to line livel in order to feed the audi rear amp. This always introduces alternator whine and buzzing as the components are shyte. You need to use the PC9-404 RCA input adapter, but obviously ensure you have rear pre-outs (RCA's) on the JVC first
    "How to tear apart the ties that bind, perhaps fcuk off might be too kind"
    Alex Turner

  6. #5
    Oranoco's Avatar
    6th Gear

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    Or just bypass the amp completely and run a fresh set of speaker wires from the deck to the rear speakers

    Life begins at 140mph
    Sell my Audi??? Kiss my rings!
    www.passionford.com

  7. #6
    scott b's Avatar
    5th Gear

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    thats what i did, not a bad job to do

 

 

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