Audio Midi Setup/Audio Devices Ch M (What is Channel M?)

Discussion in 'Digital Audio' started by leerkeller, Jul 23, 2013.

  1. macrumors member

    Joined:
    Nov 1, 2011
    Location:
    Baltimore, MD
    #1
    When you select an Audio Device, in the bottom right corner sub-window you can adjust the level for each channel. The devices I am dealing with are all 2-channel. In the aforementioned corner sub-window I see the expected Channel 1 and Channel 2. In addition to those two channels, there is also a channel M. It is placed above 1 & 2 in the sub-window. I can't seem to find anything in the Apple Documentation for Audio Midi Setup that explains what Channel M is, so I have decided to pose the question to the experts in this forum.

    Thanks in Advance For The Answer,
    Lee Randolph Keller
     
  2. macrumors member

    Joined:
    Apr 22, 2005
    #2
    can you post a screen shot?
     

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