How to turn off the microphone on an imac

Written by k.c. winslow
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By default, the built-in microphone on an iMac computer is on and available for any programs that need to use it. You have the option of disabling the built-in microphone by changing the audio input from the microphone to the audio port. The iMac can only utilise one audio input at a time, so doing this disables the microphone.

Skill level:
Moderately Easy


  1. 1

    Open the "Apple" menu and select "System Preferences."

  2. 2

    Click on the "Sound" icon in the "System Preferences" window.

  3. 3

    Select the "Input" tab on the top of the "Sound" window.

  4. 4

    Click "Line In" to select it as the device. The internal microphone is disabled.

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