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A4 B6 AVANT REAR SPEAKERS AND SUBWOOFER FAULT

Audi-fiend Dec 29, 2019

  1. Audi-fiend

    Audi-fiend Registered User

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    Hi

    Looking for some assistance. Some time ago I replaced the factory head unit(non bose) with a Pioneer AVH X3500DAB. I cant remember if everything worked OK after this but a few weeks ago a happened to be checking the sound to the rear speakers and sub and realised they werent working. I recall when fitting you had to re connect a blue wire that powered rear amp so thought I must have forgotten to do this, then just left it alone.

    Pulled head unit today and found i had connected a blue/white from aftermarket harness to blue amp wire in car. i checked the connection and when plugged/unplugged, I could hear a click coming from what I presume is a relay in at the sub in the boot.

    I plugged in the original factory stereo to check if rear speakers and sub would work again but only sound from the front speakers.

    Is there a common issue with rear speakers/sub that might be present. A fuse or a common connector to rear speakers that might be loose? The only work done anywhere in rear doors was a glass replaced a few years ago in the NSR door.

    Any help much appreciated.

    Cheers
     

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