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Thread: Continuous constant noise from speakers

  1. #1
    Join Date
    Mar 2019
    Location
    ON
    Posts
    45
    My Cars
    BMW 2011 323i U1 SEDAN

    Exclamation Continuous constant noise from speakers

    Hello,
    This E90 323i speakers have constant noise coming,

    This speaker noise does not change with volume up or down from radio.
    Speaker noise starts right away when i put ignition key in and stays there irrespective of Engine on/off
    Noise goes off automatically 2-3minutes after I take ignition key out.




    Please play check audio I recorded coming out from speakers. I put phone microphone right on the top of speaker.

    Everything is stock on this car, Radio, speakers etc, Nothing is modded.


    https://vocaroo.com/i/s1nfJDmml9fn


    Thank you

    Everything is stock on this car, Radio, speakers etc, Nothing is modded.
    Last edited by adm1n1strator; 03-28-2019 at 12:28 AM.
    | Model 323i U1 | Year 2011 SEDAN | Development Code E90 (MUE) | Type PG77 | Miles 95000

  2. #2
    Join Date
    Dec 2002
    Location
    Cali
    Posts
    3,261
    My Cars
    2004 330Ci
    Sounds like electrical interference from another electronic device in the car.
    Usually when i am trying to solve NOISE. I check and clean grounding points for the radio system.
    Possible some wires are running on top of your speaker wires emitted noise into the speaker wire.

  3. #3
    Join Date
    Mar 2019
    Location
    ON
    Posts
    45
    My Cars
    BMW 2011 323i U1 SEDAN
    Quote Originally Posted by bigmansM View Post
    Sounds like electrical interference from another electronic device in the car.
    Usually when i am trying to solve NOISE. I check and clean grounding points for the radio system.
    Possible some wires are running on top of your speaker wires emitted noise into the speaker wire.
    thanks for response. I will start with ground
    | Model 323i U1 | Year 2011 SEDAN | Development Code E90 (MUE) | Type PG77 | Miles 95000

  4. #4
    Join Date
    Mar 2019
    Location
    ON
    Posts
    45
    My Cars
    BMW 2011 323i U1 SEDAN
    I re-connected the radio wiring and the noise is gone permanently, but sometime aux is not working
    | Model 323i U1 | Year 2011 SEDAN | Development Code E90 (MUE) | Type PG77 | Miles 95000

  5. #5
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,931
    My Cars
    2018 BMW M240i
    Check the male pins and female sockets in the connectors to see if they are in good condition.

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