WOW! DVI Audio!

Discussion in 'Mac mini' started by iphone2g&3gfan, Dec 27, 2013.

  1. iphone2g&3gfan, Dec 27, 2013
    Last edited: Dec 27, 2013

    iphone2g&3gfan macrumors member

    Joined:
    Jun 14, 2013
    Location:
    Orlando, Florida
    #1
    Hi everyone,

    I discovered that with the late 2012 model, plugging in the included hdmi to dvi and then pluging in a dvi to hdmi passive cable, I got audio! I dont know how.
    Can anyone explain this?

    Im using the Mac Mini Core i7 2.3 Ghz with 4gb ram.
    It looked like a native 5.1 as i watched a movie and i could hear the right sounds from the surround speakers and the center speaker.
     
  2. mpantone macrumors 6502

    Joined:
    Mar 20, 2009
    #2
    Congratulations, apparently you chose wisely and purchased the correct cables.

    Not much else to say.
     
  3. jwhazel, Dec 27, 2013
    Last edited: Dec 28, 2013

    jwhazel macrumors regular

    Joined:
    Sep 22, 2005
    #3
    Hdmi type A and DVI-d are pin for pin the same except for the CEC line used for remote control. By going from hdmi > dvi > hdmi all you're doing is making a convoluted extension cord.

    Edit for clarity: HDMI audio doesn't run on its own line, it gets muxed into the video signal. The only thing stopping normal transmission of audio over every dvi port is sort of a chicken and egg scenario. Most displays with dvi input won't demux the audio properly. So most video chips with dvi output won't bother to send it. There were several pc video cards that output audio via dvi for use with an hdmi dongle (Radeon 4870 comes to mind because I owned one).
     

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