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Thread: BMW 325ti -01 Compact

  1. #11
    Newbie
    Join Date
    Jan 2012
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    1

    Special interface for bmw microphone

    Could you sell me one interface please? this is for my 2003 e39. My aftermarket bluetooth device has a 3.5mm connector. contact me at 908.770.xxxx or mutarabosco yahoo fr.
    Last edited by Enforcer; 01-30-2012 at 10:06 AM. Reason: remove phone number and break up email address. Don't post your personal details on a fourm unless you are want to be spammed

  2. #12
    Newbie
    Join Date
    Jul 2011
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    Alabama
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    27
    Looks like it was one heck of an install. I like the USB hookup by the shifter.

  3. #13
    Newbie MadToha's Avatar
    Join Date
    Apr 2014
    Location
    Russia
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    2
    Hi! I'm trying to connect OEM BMW mic to BLK-MD-SPK-B Bluetooth module. A simple mic works fine but there are too much acoustic noices. Tried to connect OEM mic instead of it - just 2 wires (3rd is not connected as WDS says) - and it almost doesn't work. Tried a simple schematic (one R + one C) with different voltages (vmic of module is 2.5v, also tried 3.3v and 5v) - the same result. I could hear very low sound only if I speak directly to the mic near mouth.

    Do you have an idea how to connect OEM mic to that module?

    BTW, how did you succeeded to power mic with both 5V and PC's sound card? How does this schematic works?

  4. #14
    Variable Bitrate
    Join Date
    Sep 2012
    Location
    Germany - Munich
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    396

  5. #15
    Newbie MadToha's Avatar
    Join Date
    Apr 2014
    Location
    Russia
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    2
    Quote Originally Posted by harryberlin View Post
    There is a difference between connecting mic to PC's sound card and to BT module: sound card's input has two wires (GND and combined signal+power with RC circuit built-in), but BT module has three wires (GND, mic power 2.5V and mic signal input).

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