Apple TV 4 Low Volume on Movies.

Discussion in 'Apple TV and Home Theater' started by CaTOAGU, Oct 30, 2015.

  1. CaTOAGU macrumors 6502

    Joined:
    Jul 15, 2008
    Location:
    Manchester, UK
    #1
    Has anyone else noticed the volume is unusually low when playing movies compared to music and compared to the gen 3 Apple TV. It's also outputting 7.1 channel PCM to my receiver whereas the previous Apple TV output Dolby Digital 5.1.
     
  2. CruiseToGo macrumors member

    Joined:
    Sep 22, 2012
    #2
    Yes, I also noticed this. I couldn't believe the horrible sound quality on the video apps like disney junior live programming and others. My atv3 was much louder and the surround experience we better. If there is no fix for this, I will take it back.
     
  3. Gueeds macrumors member

    Joined:
    Jul 29, 2015
    #3
    I don't have mine yet to compare, is there a setting somewhere to set the output to bitstream instead of PCM?
     
  4. CaTOAGU thread starter macrumors 6502

    Joined:
    Jul 15, 2008
    Location:
    Manchester, UK
    #4
    Thanks, the quality seems OK so long as the volume is turned up, although I sometimes think the range is being compressed as well. I'll have to back to back some more movies when I've got time to check. It's still making me think twice though.
     
  5. CaTOAGU thread starter macrumors 6502

    Joined:
    Jul 15, 2008
    Location:
    Manchester, UK
    #5
    There's 3 settings, Auto, Dolby Surround and Stereo. If I have it set to Auto, music is output in Stereo as you'd expect but Movies are output in 7.1 PCM, at a far lower level than the Stereo, I'm also not sure if there's some Dynamic Range Compression going on even with the Range Compression turned off, it's hard to tell. If it's set to Dolby Surround, it will bitstream it to the Receiver I think, however music is then also output in Dolby Surround, which is weird.

    All this could be perfectly normal but it's definitely very different than the previous version for me. The 7.1 PCM output could be because of the support for Dolby Digital 7.1, if so it's still disappointing that it can't bitstream it to a receiver.
     
  6. jaysue macrumors regular

    jaysue

    Joined:
    Aug 4, 2011
    Location:
    Tolleson, AZ
    #6
    I did notice it was a little low as well, i set my setting to DD and nothing really changed, during a movie when you pull down the menu mine just says english, will it show surround like the Apple TV 3?
     
  7. taeclee99 macrumors 6502a

    taeclee99

    Joined:
    Jun 4, 2002
    Location:
    Anywhere but here
    #7
    I noticed that the sound is low for iTunes movies as well. The volume varies between individual audio tracks too. I am wondering where the sound check option went. I cannot seem to locate it in the settings. Having to keep adjusting the volume between movies and music is very annoying. If there is no way to normalize the sound volume , I will probably end up returning the apple tv and getting a Roku 4 or Amazon Fire TV.
     
  8. Gueeds, Oct 31, 2015
    Last edited: Oct 31, 2015

    Gueeds macrumors member

    Joined:
    Jul 29, 2015
    #8
    It's been a while since I've done the whole bitstream vs. PCM issue as I've set every other AV device to bitstream, but the ATV4 should be set to PCM as it defaults everything to DD even when it's just stereo as that's either a bug just a horrible way of forcing everything into a DD format.

    Really, the volume difference is just how your receiver sets the volume levels. DD is set at a higher volume level than PCM, there's absolutely 100% nothing wrong with your ATV or your receiver, that's how PCM is. Hence the noted difference between Stereo/PCM/DD. I just set the reference volume on my ATV port higher than normal and it's the same as if I used DD.
     

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