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studiomatthewbrooks
Contributor I
November 17, 2020

LG C9 + Arc + UB820 / Multichannel PCM for DTS Blu-Ray discs

  • November 17, 2020
  • 344 replies
  • 32087 views

I’m running an LG C9 with a Panasonic UB820 Blu-ray player, Sonos Arc + Sub gen 3 + One SL surrounds. The lack of DTS support on the Arc has been frustrating for non Dolby encoded Blu-ray discs, so I have been eagerly awaiting the multichannel PCM update.

It’s finally arrived (thanks, Sonos!) and I tried playing a DTS encoded Blu-ray and… no dice. Still stereo PCM 2.0. Has anyone running a similar set-up managed to get 5.1 PCM output from the Arc?

The C9 supports eARC and multichannel PCM, I’m using 48gbps HDMI cables that support up to 8k60Hz, all of the devices are up to date, I have the C9 set to PCM with eArc enabled, DTS output set to PCM on the UB820… I’m really at a loss here. Any ideas or suggested settings?

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    344 replies

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    Laird M Malamed
    Enthusiast I
    January 14, 2021

    Thanks for that link. Yeah, sounds like it might be the issue with sampling frequency still not correct. Maybe an easy fix if LG wants to do it.

    darkonex
    Trending Lyricist I
    January 18, 2021

    This issue is so frustrating!  I submit a long email about this to both LG and Panasonic and linked this thread hoping that one of the 2 (more likely LG) could fix this with firmware.  I have until Feb 7th to refund this UB820 UHD player and I’m still thinking about doing so and just going back to using an Xbox to play my blu rays but I really love the clarity and the Dolby Vision support with the player so I’m so distraught over this on what I should do.

    Laird M Malamed
    Enthusiast I
    January 18, 2021

    I agree with the frustration (and am on a similar timeline on returning the 820). But the picture is great, and there really aren’t any other players I prefer. The Sony ones require manual switching Dolby Vision. The LG one cannot send out PCM for just DTS - it’s all audio or none. The Samsung and Oppos are not made any longer.  

      iBoyley
      Trending Lyricist I
      January 18, 2021

      Interestingly some guy on Reddit owns a CX and said that

      “If you set the TV earc to passthrough and then unplug the TV from power for a few seconds. It will start miraculously playing whatever the number of channels you expect.”

       

      I haven’t got round to testing it yet

        swoopie
        Lyricist I
        January 19, 2021

        I also have the same setup. Instead of losing more hair, I finally gave up and purchased the Sony UBPX700, which also has Dolby Atmos and Dolby Vision.  It’s very inexpensive and it works. I am now getting LPCM 5.1/7.1 when playing DTS discs.  Until the issue is fixed, I will use the Panasonic for Dolby encoded discs and the Sony for DTS encoded discs.

        Hi pdedmon,

        Just new to this forum, with a Sonos ARC underway, I was getting worried about my Bluray collection with DTS tracks (and potentially new 4K Blurays with DTS). Just bought a Sony UBP-X700 as well, so I was very happy to see your post. Can you tell me which settings you had to change on the Sony to get it to output LPCM and have it working with the ARC?

        I might have an additional challenge as my Philips TV does not support eARC, but I’m looking into the HDFury Arcana for that.

        Thanks in advance!

        Erik

        GuitarSuperstar
        Lead Maestro
        January 19, 2021

         @swoopie On your Sony player, when watching a DTS-encoded disc, set Digital Audio Output to PCM. And go ahead and set both BD Secondary Audio and Audio DRC to Off.

        EDIT: Also set DTS Neo:6 to Off and Downmix to Surround.

        Because your TV doesn’t support eARC, it will not be able to pass through lossless multichannel PCM. But the Arcana will allow you to bypass your TV and send audio straight to the Arc.

        "Receive with simplicity everything that happens to you." - Rashi
        swoopie
        Lyricist I
        January 19, 2021

         @swoopie On your Sony player, when watching a DTS-encoded disc, set Digital Audio Output to PCM. And go ahead and set both BD Secondary Audio and Audio DRC to Off.

        Because your TV doesn’t support eARC, it will not be able to pass through lossless multichannel PCM. But the Arcana will allow you to bypass your TV and send audio straight to the Arc.

        @GuitarSuperstar damn that was fast :thumbsup_tone1: Thanks! Will try this as soon as my ARC arrives (around 19 Feb :scream: ), or perhaps I can already view the output settings somewhere. Will check it out!

        Chetiya
        Lyricist III
        January 21, 2021

        Hi all, just stumbled on this thread which seems relevant to me as I’m getting a UB820EB. Does anyone know if the latest LG CX / GX firmware 03.21.16 which just came out helps with the issue of passing through multichannel pcm?

        GuitarSuperstar
        Lead Maestro
        January 21, 2021

        @Chetiya According to the LG website, the latest firmware update only enhances the picture quality.

        "Receive with simplicity everything that happens to you." - Rashi
          Chetiya
          Lyricist III
          January 21, 2021

          @Chetiya According to the LG website, the latest firmware update only enhances the picture quality.

          Thanks, had a feeling it wouldn’t do. Guess it’s the HDfury DrHDMI 4k for me then. 

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