Mac Pro: A Question of SOUND

Discussion in 'Mac Pro' started by NJRonbo, Jan 27, 2007.

  1. NJRonbo macrumors 68000

    Jan 10, 2007
    I am a brand new Mac Pro user who just switched from a PC.

    Have a question regarding the way the Mac Pro handles SOUND

    When I hooked up my Mac Pro I opted to use the OPTICAL output
    rather than using the smaller single jack audio output beneath it.

    Problem is, some programs choose on their own to output through
    the OPTICAL (digital out) output and others choose to use the
    built-in speaker.

    I have been able to go into PREFERENCES of individual programs
    (EyeTV for instance) and select DIGITAL OUT as my preference.

    However, there are other programs that give you no preference
    whatsoever on how the audio is outputted (such as iChat login

    Other than going into the System Control Panel -> Sounds
    and setting DIGITAL OUTPUT as the default, are there any other
    suggestions to steer all program audio through the optical out?....

    ....or was I better off opting to use the smaller output jack
    beneath it?

    I even wish the almost Gong-like audio that plays through
    the internal speaker when powering on the Mac Pro was pushed
    through the digital output as well, but I know that's impossible.
  2. michaelsaxon macrumors 6502

    Nov 15, 2006
    Have you gone into system preferences and selected your default output as optical there?
  3. yojitani macrumors 68000


    Apr 28, 2005
    An octopus's garden
    I'd like to know what other responses you get to this. I also have a similar problem with the analogue line out. In fact, the powering on sound should come through the speakers.. at least it did with my former powermac...

  4. FireArse macrumors 6502a

    Oct 29, 2004
    Power-up sounds

    Come to think of it, you're absolutely right.

    My PM 2GHz had the startup 'Bong' throught the speakers too - i remember because at times Id wake up my parents cos Id left the volume on the external speakers too high!

    As for the optical sound issues - I was under the impression that once you selected 'optical' as your default sound device, it all went through there.

  5. NJRonbo thread starter macrumors 68000

    Jan 10, 2007
    I noted in my original post that I did go into the
    User Preferences and selected OPTICAL OUTPUT as
    my default so I am surprised that I am getting a mixed
    bag of sound outputs.
  6. yojitani macrumors 68000


    Apr 28, 2005
    An octopus's garden
    I don't think this will answer all your questions, but I just noticed that in the 'sound' preference panel under 'sound effects' you can choose to "play alerts and sound effects through" different channels.

  7. michaelsaxon macrumors 6502

    Nov 15, 2006
    Sorry. I didn't read carefully.
  8. sblasl macrumors 6502a


    Apr 25, 2004
    Heber Springs, AR
  9. Darwin macrumors 65816


    Jun 2, 2003
    round the corner
    I've noticed the same thing with my Mac Pro, the startup sound always comes through the internal speaker.

    I'm guessing that in the startup process the Mac Pro doesn't detect the use of the external audio jacks and just uses the internal speaker because thats all it sees in the beginning.

    Thats my theory anyway

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