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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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    rodimus
    Lyricist III
    July 20, 2020


     

     

     

    I followed all of these steps but still won’t get any sound through my Arc. Can you confirm the firmware you’re running in your LG?

    ewolkoff
    Enthusiast II
    July 20, 2020


     

     

     

    I followed all of these steps but still won’t get any sound through my Arc. Can you confirm the firmware you’re running in your LG?

    04.80.03

    rodimus
    Lyricist III
    July 20, 2020


     

     

     

    I followed all of these steps but still won’t get any sound through my Arc. Can you confirm the firmware you’re running in your LG?

    04.80.03

    Thanks! My BX is running 03.01.15 and won’t update any further than that, so maybe it’s a model specific issue as well.

    jthomas009
    July 20, 2020

    Yes I have 03.01.15 as well Lg 75 Nano 906  2020 eARC and it doesn’t work.   Sorry I manually updated to 03.01.30 from .15 and no change.  This update is on LG support page for my model.  Automatic update didn’t detect it.   It works for internal apps Apple TV+, Netflix and Disney.  But does not work on Apple TV 4K with this brand new model with eARC.

    ewolkoff
    Enthusiast II
    July 20, 2020

    You guys aren’t getting Atmos or any sound at all?

    jthomas009
    July 20, 2020

    Yep no sound if using Atmos turned on (on the Apple TV 4K) as in your screen grabs.  Using the same settings and ZERO sound.  Have to turn off Atmos on the Apple TV 4K and then it works with Dolby Digital 5.1.

     

    With the built-in LG apps it does work for Apple TV+, Netflix and Disney i.e., Atmos with Sonos Arc.   So for now I have stopped using the Apple TV 4K.

     

    On the 2020 75 Nano it also has no sound on the internal tv speakers with Atmos on when using the Apple TV 4K.   So this must be related to the update LG made to the way they handle LPCM.  I verified this others owners of the 2020 Nano and they have the same issue as well..different threads.

     

    I almost considered changing to the new LG soundbar 7.1 channel setup but I am too far invested in Sonos so I decided not too.  I have Sonos speakers throughout my household and I use airplay 2 so it doesn’t make sense.

     

    And its too late to return the New TV.   Not really a deal breaker as I don’t listen to the tv speakers, always had a Playbar or beam and now the Sonos Arc.  I am hoping the update that Sonos is working on for LPCM will fix it., and if that fails to see how everyone does with the HD Fury Arcana adapter.

    rodimus
    Lyricist III
    July 21, 2020

    You guys aren’t getting Atmos or any sound at all?

    No sound at all unless I force 5.1 from Apple TV or use LG built in apps. Just have to wait for Sonos or LG to release a fix I guess.

      khaz22
      Avid Contributor III
      July 21, 2020

      Same here.  I appreciate the photos, but those settings are not allowing any sound through my Nano91. 

        BBH
        Avid Contributor I
        July 21, 2020


         

         

         

         

        Don’t forget, these expanded Apple menus only appear IF you are plugged into the ARC (eARC) port on your TV.

        ledzep1
        Headliner II
        July 22, 2020

        Is this future update more beneficial for people that use external devices?

        I’m using internal apps on my LG CX to the Sonos ARC and seem to get the best audio possible I think.

        Netflix I get atmos (dd+) and dolby digital plus 5.1 

        Apple tv app purchased movies I get atmos as above and dolby digital 5.1 

        Have an Oppo 203 as well which I presume I willl get atmos (true HD) for UHD atmos discs, but not tested that as yet.

         

        So where does this future LPCM update come into play?

         

        Thanks

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