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Connecting monophonic audio signal to soundcard line input?

Discussion in 'Electronic Basics' started by John Doe, Jan 26, 2005.

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  1. John Doe

    John Doe Guest

    On the plug, ground is the larger of the three metal pieces, is that

    I would like to connect a monophonic audio signal to the line input of
    my soundcard.

    Is it OK to leave one of the two stereo contacts left/right open? Or
    should the monophonic audio signal be connected directly to both?

    The physical connection/soldering stuff is not a problem.

    Thank you.
  2. Yes...closest to the base of the plug.
    It is usually okay to connect one output to two inputs, but the
    reverse is wrong, unless buffering is used. Some minor impedance
    matching issues may be encountered.

  3. peterken

    peterken Guest

    ground is the larger metal part

    it's ok to leave one signal contact open, BUT this might induce low
    frequency noise so best is ground the "open" contact

    however and just for comfort reasons it might be best to connect both to the
    signal since all speakers are operational then
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