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Replace Stereo Without Losing Stock Subwoofer Audio

Discussion in 'A3/S3/Sportback (8P Chassis)' started by flotron, Jul 28, 2013.

  1. flotron

    flotron New Member

    Oct 29, 2012
    Likes Received:
    Hi, i want to replace my oldie double-din concert stereo without losing the stock subwoofer.
    So, what to know?
    the stock subwoofer is self-powered?
    i need some kind of adapter for sub output in new stereo?

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