amplitude of headphone MIC signal

Discussion in 'The Projects Forum' started by devgorkha, Sep 14, 2011.

  1. devgorkha

    Thread Starter New Member

    May 17, 2010
    29
    0
    I like to known the signal level of headphone MIC that we use in recording in computer or any other recording devices. And what is the voltage that required to powering MIC of headphone(common type of headphone).
     
  2. nucleargungus

    Member

    Apr 6, 2009
    23
    1
    I this a phantom mic? Does it have an XLR plug? Whats the brand model etc? You can probably glean this information from the product literature.

    Robert
     
  3. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    Common headsets use an electret mic that is powered from 3V to 10V through a 2.2k to 10k resistor. The output is 5mV to 10mV RMS when speaking normally 10cm away.
    The preamp should have an input resistance of 10k to 100k ohms.
     
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