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esspydermonkey
Contributor I
June 12, 2020
Answered

LPCM ETA for Arc?

LG has released a firmware upgrade for the B9/C9/E9 supporting multichannel PCM passthrough.  This is great except Arc doesn’t support it yet.


Because of this new update, my Apple TV decides it should use LPCM instead of Dolby Digital 5.1 with Atmos enabled resulting in only 2.0 audio for non Atmos content.  The current only workaround is to disable Atmos and enable it when you want to watch an Atmos file.  Very frustrating as the previous firmware had no issue.

 

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    Ditte
    DitteAnswer
    November 10, 2020

    Hi all,

    We hear you. With a software update today, Arc now supports multi-channel LPCM, bringing new immersive sound experiences for gaming, Blu-ray discs, and more. To get support for multi-channel LPCM on Arc, download the latest Sonos S2 update from the app store and then update your system in the Sonos S2 app. After updating the app, go to Settings > System > System Updates > Check for Updates.

    All the best,

    Ditte

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    ewolkoff
    Enthusiast II
    July 13, 2020

    Thanks - that’s interesting. 

     

    This could not get more complicated if they tried.

     

    When you say you’re getting atmos - is that through an external Apple TV 4K console, or the LG Apple app?

    Apple TV 4K.  You can’t get Atmos through the LG Apple app (or any Apple app).  Apple only allows Atmos through their own hardware (not their Apple TV apps).  That’s true on all brands of TVs that have Apple apps.  And they only allow Atmos through their own hardware with an eARC connection (no ARC).  Why?  Because they are Apple and Apple does stuff like that.

    Ackmandoo
    Lyricist III
    July 13, 2020

    Thank you very much for the clarity here.

     

    I purchased the Sonos ARC and connected it do an older Samsung through an ARC port and haven’t been able to get Atmos through my Apple TV 4k (or any other source for that matter).

     

    Your comments confirming new LG’s with an eARC connection pass through atmos are steering me in the direction of picking up a new LG  GX.

    ewolkoff
    Enthusiast II
    July 13, 2020

    Thank you very much for the clarity here.

     

    I purchased the Sonos ARC and connected it do an older Samsung through an ARC port and haven’t been able to get Atmos through my Apple TV 4k (or any other source for that matter).

     

    Your comments confirming new LG’s with an eARC connection pass through atmos are steering me in the direction of picking up a new LG  GX.

    Yeah I have an Apple 4K TV connected to a 2018 Samsung QLED 60 and no dice on Atmos (though I get it through Roku, Firestick and some Samsung TV apps).  LG GX is a nice TV.   I recommend buying through Greentoe.  You’ll save a bunch of money.   Just got my E9 a couple of weeks ago (wanted a 2019 for the full HDMI 2.1 ports and the better price). 

    Gav1976
    Lyricist III
    July 13, 2020

    Thanks - that’s interesting. 

     

    This could not get more complicated if they tried.

     

    When you say you’re getting atmos - is that through an external Apple TV 4K console, or the LG Apple app?

    Apple TV 4K.  You can’t get Atmos through the LG Apple app (or any Apple app).  Apple only allows Atmos through their own hardware (not their Apple TV apps).  That’s true on all brands of TVs that have Apple apps.  And they only allow Atmos through their own hardware with an eARC connection (no ARC).  Why?  Because they are Apple and Apple does stuff like that.

    This is not correct.  The internal Apple TV app on my LG CX has recently been updated. It now plays Atmos tracks. I believe LG tv’s are the first devices to be able to play atmos tracks via the Apple TV app.

      ewolkoff
      Enthusiast II
      July 13, 2020

      Thanks - that’s interesting. 

       

      This could not get more complicated if they tried.

       

      When you say you’re getting atmos - is that through an external Apple TV 4K console, or the LG Apple app?

      Apple TV 4K.  You can’t get Atmos through the LG Apple app (or any Apple app).  Apple only allows Atmos through their own hardware (not their Apple TV apps).  That’s true on all brands of TVs that have Apple apps.  And they only allow Atmos through their own hardware with an eARC connection (no ARC).  Why?  Because they are Apple and Apple does stuff like that.

      This is not correct.  The internal Apple TV app on my LG CX has recently been updated. It now plays Atmos tracks. I believe LG tv’s are the first devices to be able to play atmos tracks via the Apple TV app.

      I stand corrected.  Just released: https://www.macrumors.com/2020/06/30/lg-smart-tv-dolby-atmos-support-apple-tv-app/

      Can confirm it works on an E9. 

      khaz22
      Avid Contributor III
      July 14, 2020

      Thanks - that’s interesting. 

       

      This could not get more complicated if they tried.

       

      When you say you’re getting atmos - is that through an external Apple TV 4K console, or the LG Apple app?

      Apple TV 4K.  You can’t get Atmos through the LG Apple app (or any Apple app).  Apple only allows Atmos through their own hardware (not their Apple TV apps).  That’s true on all brands of TVs that have Apple apps.  And they only allow Atmos through their own hardware with an eARC connection (no ARC).  Why?  Because they are Apple and Apple does stuff like that.

      I am very curious how you have been able to receive Atmos through your Apple TV 4k?  I have this setup and am unable to receive any audio when ATV is set to auto.

      ewolkoff
      Enthusiast II
      July 14, 2020


       

       

      Ackmandoo
      Lyricist III
      July 15, 2020

      Super helpful. Thanks, ewolkoff.

       

      Also, power move with the fireplace in the bedroom!

        MarkJones
        Trending Lyricist I
        July 16, 2020

        SoCal - I don’t think that’s correct.

        As for the rest of this thread, I can report that I am running the latest firmware on an LG E9 and do not have this issue.  My Apple TV is playing Atmos without having to do anything in the audio settings.  Just make sure your audio setting is set to “Auto” rather than “Pass Through” or PCM.

         

        But what about when you’re trying to play DD5.1 content? On my system (Apple TV, LG C9, Sonos Arc, it plays Atmos content perfectly but the Sonos Arc sees DD5.1 content as Stereo 2.0.

          ewolkoff
          Enthusiast II
          July 16, 2020

          SoCal - I don’t think that’s correct.

          As for the rest of this thread, I can report that I am running the latest firmware on an LG E9 and do not have this issue.  My Apple TV is playing Atmos without having to do anything in the audio settings.  Just make sure your audio setting is set to “Auto” rather than “Pass Through” or PCM.

           

          But what about when you’re trying to play DD5.1 content? On my system (Apple TV, LG C9, Sonos Arc, it plays Atmos content perfectly but the Sonos Arc sees DD5.1 content as Stereo 2.0.

          You are right.  That is an issue for me too. 

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