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Thread: thinking of going back to stock

  1. #1
    Join Date
    Oct 2013
    Location
    NSB, FL
    Posts
    639
    My Cars
    2005 BMW Z4 3.0i

    thinking of going back to stock

    So I have an aftermarket amplifier that drives the speakers. It's connected through RCA cables from the front to the back. Is there a connector for a BMW stereo that allowed the use of RCA cables?

    Would make putting in a stock stereo simpler.
    Photbucket looking to make extra money......

  2. #2
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,931
    My Cars
    2018 BMW M240i
    Here’s the issue: the factory head unit and the factory amp use balanced differential signals, and not line level or speaker level signals. Balanced differential signals are typically a couple of volts while line level is about 0.5 volts. Speaker level signals are similar to balanced differential signals. So, if you put a factory head unit back in the car you’ll get very loud and garbled (distorted) sound from the amp and the speakers.

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