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michary
Contributor I
June 9, 2020

Arc + ATV + Non Atmos Content

  • June 9, 2020
  • 50 replies
  • 4442 views

Hello,

 

just received the Arc and so far loving my first Sonos device :relaxed:

 

I have an Apple TV 4K, LG OLED B9 (eARC support) and now the Sonos Arc.

When I play normal DD-Content on the ATV, the Arc only outputs Stereo. (The TV also says PCM)..

 

Is there anything I can do besides force the ATV to output DD? Because it would be not so nice to switch between the audio settings if I want to watch Atmos or DD-Content.

 

Thanks

Michael

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    50 replies

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    khaz22
    Avid Contributor III
    June 20, 2020

    We just bought the same tv, and look forward to using the ATV as soon as Sonos updates the Arc to read LCPM.  Right now we are watching Netflix, Prime and Apple Tv via the app within the TV.  Youtube TV does not work from the app, so we have to watch from the Apple TV box.  This is the only way I have been able to make everything work with the correct audio output at this time, as I am not interested in changing the formats within the TV or ATV every time I want to change where we are getting our video content.

    I will be very excited when the update adds LCPM and we can go to one place to watch our shows and movies.

    svomak
    Enthusiast II
    June 20, 2020

    I’m experiencing the same issue, hopefully this is next on the list and the bass fix. 

    batsabode
    Lyricist III
    June 20, 2020

    We just bought the same tv, and look forward to using the ATV as soon as Sonos updates the Arc to read LCPM.  Right now we are watching Netflix, Prime and Apple Tv via the app within the TV.  Youtube TV does not work from the app, so we have to watch from the Apple TV box.  This is the only way I have been able to make everything work with the correct audio output at this time, as I am not interested in changing the formats within the TV or ATV every time I want to change where we are getting our video content.

    I will be very excited when the update adds LCPM and we can go to one place to watch our shows and movies.

    The appletv app on LG does not support atmos yet but LG said it will eventually, So far The only app that works for me on LG to arc is Netflix, I cant get Plex to work as I downloaded a sample atmos short demo but the sound again did not come through. Does anyone have any idea as to when the Sonos update to allow appletv  to work in a direct connection to the tv? And is everyone sure that LCPM will work correctly? Thanks everyone

    dewnz
    Lyricist I
    June 21, 2020

    I have the new LG 75NANO90UNA tv which has an EARC hdmi 2.0 I have that sending the signal to the Sonos Arc and I have the Apple TV connected to a regular hdmi 2.1 but it refuses to play a sound when it goes into a movie that has atmos. When I go to the menu for the movie the theme music plays and when I play a non atmos movie the sound goes through fine but the minute I play an atmos movie from atv it has no sound.  I can play atmos from the Netflix app on the tv (Space Force) and it does show on the Sonos App that it is in Dolby Atmos. I am now at a complete loss as to what else to try as the entire reason I bought a brand new tv and the Sonos Arc was to be able to play my atmos movies I bought that are on my Apple TV. If anyone has any ideas I would love to hear them, I have tried every setting I can think of, and the tv has arc set to on and passthrough enabled also. The Apple TV is set to bitstream on the lg tv. The lg app for appletv+  doesn't play atmos but it is not supported as yet apparently but will be updated FYI  but the LG  Netflix app plays atmos perfectly. 

    ARGHHHHHH


    I’m having the exact same issue with my brand new setup LG 65 NANO85. No sound output at all on Atmos titles from Apple TV services (Netflix, Apple TV+ etc). TV HDMI setting is set to Bitstream, only other option is PCM. 

    Any one know why I’m getting no sound at all from Atmos titles? This is so disappointing as I’ve purchased this whole brand new tv and setup just to get Atmos on the Arc. 

    batsabode
    Lyricist III
    June 21, 2020

    Having read a lot it would appear that when the arc is in Dolby mode that it send out a mat signal and until Sonos update their software to include LPCM it won’t work 

      Aknedude
      Trending Lyricist I
      June 25, 2020

      Let's hope that the Sonos staff is looking in this thread and see this huge issue. It should be an easy fix. Sonos Arc is not worth anything without this fix. It should have been working from day one. 

      FrankNL
      Lyricist III
      June 25, 2020

      Let's hope that the Sonos staff is looking in this thread and see this huge issue. It should be an easy fix. Sonos Arc is not worth anything without this fix. It should have been working from day one. 

      Sonos can’t fix this. Apple should enable recode to Dolby Digital Plus as output or even better, bitstream the audio track.

        batsabode
        Lyricist III
        June 25, 2020

        Let's hope that the Sonos staff is looking in this thread and see this huge issue. It should be an easy fix. Sonos Arc is not worth anything without this fix. It should have been working from day one. 

        Sonos can’t fix this. Apple should enable recode to Dolby Digital Plus as output or even better, bitstream the audio track.

        I was under the impression that Sonos needs to implement LPCM as a signal and it should all work. I basically don’t care who does it I just want it to work as DMD this should have been known before releasing this product and having people buying New TVs with EARC. 

          Aknedude
          Trending Lyricist I
          June 25, 2020

          It is sonos that needs to fix this, not apple. Sonos could have implemented this before release. They could make this work in a few days IF they wanted to. It is free to use the codec. I have never bought sonos arc if I have known this. It's not very customer friendly to have this issue from day 1. 

            FrankNL
            Lyricist III
            June 25, 2020

            LPCM is only interesting if you have EARC. LPCM can’t pass over ARC, therefore it should be Dolby Digital Plus in case of ARC. Which the ATV only outputs for Atmos content. For non Atmos content you have to force the ATV to Dolby Digital but then Atmos doesn’t work. Which is the point the topic starter is trying to make.

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