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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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    Naekyr
    Enthusiast II
    June 18, 2020

    Which requires an eARC connection. 


    so whats the problem then?

    SONOS ARC | SONOS Sub | SONOS Play 1 x 2 | LG C9 OLED | PS5 | RTX3090 Gaming PC | Sennheiser GSP600 Headset | Audio Pro T8L Desktop Monitors
    Airgetlam
    Airgetlam
    June 18, 2020

    Sorry, what is what problem? I don’t see a post from you in this thread indicating an issue. My response was to Downl1nk_1’s comment about the Apple TV’s output. 

    Bruce
    batsabode
    Lyricist III
    June 20, 2020

    my tv has EARC which is connected to the Sonos Arc but the ATV only works with 5.1 as soon as I try to play an atmos format movie there is zero sound on Sonos Arc when Atmos is enabled on the ATV. I have the LG set to passthru. Hoping that Sonos update the arc to accept LPCM as soon as possible otherwise I spent $3000 for a new soundbart and tv for no reason. My LG appletv app doesn't play Atmos as its not supported yet by LG but hopefully will when update , the only app that seems to work for me is Netflix on LG tv.

     

      ScouseUlster
      Lyricist I
      June 21, 2020

      Needs to happen soon. It’s a joke that I’m having to use stereo on an 800 quid sound bar

        somethingmissing
        Lyricist III
        June 22, 2020

        Would like to second this, I’m in the same situation. I have two devices (LG C9 and an Apple TV 4K) that as I understand it are following home theatre best practices in passing through multi PCM and one device (the Arc) that is holding everything back - I could tolerate it when it was just my Switch affected by Sonos’ lack of multi PCM support, but with the Apple TV also caught up in this the Arc simply isn’t worth the money. Based on what other Sonos owners have told me about their struggles with DTS support, I’m planning on returning the Arc if an ETA for multi PCM isn’t confirmed before the return period lapses. Will just switch back to my old Playbar and put aside the cash to migrate away from Sonos.

          somethingmissing
          Lyricist III
          June 22, 2020

          Do people come on here as a way of passing time, for reasons other than to talk about Sonos products? Must have such fun lives.

          ledzep1
          Headliner II
          June 22, 2020

          What about a LG CX owner and apple tv 4k, would I get same issue reported on here, was going to order but looks like Im best holding off for now.

          I also own an oppo203 but gather that would be ok.

          jgatie
          jgatie
          June 22, 2020

          No, some people come on here to launch silly threats demanding a completely unrealistic response time for their pet feature to be implemented. 

          somethingmissing
          Lyricist III
          June 22, 2020

          @jgatie A threat requires leverage...I don’t think my one Arc return is that much leverage against a business the size of Sonos. So relax. Now can you leave us alone to talk about this issue? Thanks.

          @ledzep1: based on this thread it looks like a similar firmware update has been/will soon be delivered for the CX as well. So my suggestion is hold off updating to the latest firmware if you’re planning on getting the Arc, or hold off getting the Arc until Sonos have delivered LPCM.

            ledzep1
            Headliner II
            June 22, 2020

            @jgatie A threat requires leverage...I don’t think my one Arc return is that much leverage against the business the size of Sonos. So relax. Now can you leave us alone to talk about this issue? Thanks.

            @ledzep1: based on this thread it looks like a similar firmware update has been/will soon be delivered for the CX as well. So my suggestion is hold off updating to the latest firmware if you’re planning on getting the Arc, or hold off getting the Arc until Sonos have delivered LPCM.

            I mean is it a certain Sonos will fix this in an update, if yes I don't mind placing an order and in the meantime hold off updating my TV.

            From what I gather the issue is when playing Netflix 5.1 audio and it gets output as stereo 2.0 

            Would this issue happen on my oppo203 as well?

             

             

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