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chucksmith33
Trending Lyricist I
June 15, 2020

Arc with LG B7 - no Atmos

I just swapped out my playbase with an Arc.  It sounds great, but I am trying to get it to play Dolby Atmos content.  I have a 2017 LG OLED B7 TV that has an ARC output (not eARc).  I have found a few streaming sources with Dolby Atmos content, but it will only play through the TV speakers (when switches to internal speaker). Any help would be greatly appreciated.

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chucksmith33Author
Trending Lyricist I
June 16, 2020

I have tried with native apps, Firestick 4k and XBOX One S.  No luck with any of them.

    Cardwizard
    Enthusiast I
    June 17, 2020

    My LG C7 works perfectly with the arc and plays Atmos on Netflix Native App and through AppleTV without any problems.

    I don’t understand why that is, it works for some and for some it won’t 

     

    I tried using different hdmi cables, power cycle everything, check settings over and over

    Mkoenig4
    Contributor I
    June 17, 2020

    I can confirm that Atmos is also working on my C7 from Apple TV. 

    GrizzleBoy
    Lyricist I
    June 17, 2020

    Make sure you follow all the instructions here in the optical/arc section and make sure your digital output is set to dobly digital plus.

     

    http://"Help library: [LG webOS TV] – Sound output options | LG Canada" https://www.lg.com/ca_en/support/product-help/CT20098005-1437136302910 

    Joshbear
    Avid Contributor I
    June 17, 2020

    I can confirm that Atmos is also working on my C7 from Apple TV. 

    Hi

    is the lip sync all ok when outputting through ATV?  I assume the ATV goes to the C7 and then C7 to Arc?

     

    thanks

    anujgoel83
    Trending Lyricist I
    June 17, 2020

    Can also confirm my 65B7 passes through Atmos via Netflix, must be something in the settings

    Cardwizard
    Enthusiast I
    June 17, 2020

    And today: fired up my AppleTV 4K, started a movie with Atmos and: Atmos coming from the Sonos Arc… did not change anything, iTunes Movies, Netflix all stream Atmos now 🤷🏼

      chucksmith33Author
      Trending Lyricist I
      June 17, 2020

      Very frustrating.  All settings seem to be correct, but neither native apps nor apps on 4k firestick will play atmos.  TV firmware is up to date.  I am using the hdmi cable that came with the sound bar which I assume supports ARC but will try another cable.

        DABINLA
        Contributor I
        June 18, 2020

        Hello - I have a LG C7 that is plugged into my playbase using the optical.  i have a sub and 2 ones as surround.  all I ever see in the Sonos app is 2.0 stereo. this cant be correct can it?  having said all of this, the system DOES sound amazing, i just need to some indication I’m getting the sound i should be.

        are there certian settings on the TV that should be set a certian way?  I have ARC/Optical as sound out.

        thanks in advance

        Derek

        david82
        david82
        Collaborator II
        June 18, 2020

        Hello - I have a LG C7 that is plugged into my playbase using the optical.  i have a sub and 2 ones as surround.  all I ever see in the Sonos app is 2.0 stereo. this cant be correct can it?  having said all of this, the system DOES sound amazing, i just need to some indication I’m getting the sound i should be.

        are there certian settings on the TV that should be set a certian way?  I have ARC/Optical as sound out.

        thanks in advance

        Derek

        make sure the LG C7 Settings>Sound>Sound Out - is set to Audio Out (Optical/HDMI ARC) and the submenu Digital Sound Out is set to Auto. my guess would be it might have been set to PCM. the LG C7 manual section for this is here.

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