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Headphone, Line, Microphone levels?

Discussion in 'Electronic Design' started by Davej, Dec 5, 2012.

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  1. Davej

    Davej Guest

    Anyone happen to know the resistors or ratio to drop headphone level
    to microphone level? Thanks.
     
  2. Les Cargill

    Les Cargill Guest

    You have to know how much attenuation you need.

    http://www.nu9n.com/tpad-calculator.html
     
  3. Guest

    What sort of microphone?
     
  4. Davej

    Davej Guest

  5. Phil Allison

    Phil Allison Guest


    ** There is no specific level for either.

    IME, headphone levels vary over a rage of 100:1 and mic levels vary over a
    rage of 1000:1

    Try an attenuation of 100:1 ( 1kohms feed and 10ohms to common) and see how
    that goes.


    ..... Phil
     
  6. hamilton

    hamilton Guest

  7. Davej

    Davej Guest

  8. Without knowing either device. Taking mic level at around 1 mv, and
    headphone level at 100 mv, probably 100:1 is a good place to start.
     
  9. Without knowing either device. Taking mic level at around 1 mv, and
    headphone level at 100 mv, probably 100:1 is a good place to start.
     
  10. Guest

    most mixers generally have pad button for line/mic that is 20dB

    -Lasse
     
  11. Davej

    Davej Guest

    1K to 10ohm "L" seems to work fine. Thanks. Now I just have to be
    careful that microphone power is never turned on.
     
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