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gcsg1
Contributor I
July 25, 2020
Answered

LG C8 and Sonos Arc always showing as stereo 2.0.

Hi, I’ve recently set up my Sonos Arc, I have an LG C8, I know I won’t get true Atmos due to only using the arc port as the C8 doesn’t have earc 

 

i tried Netflix and Disney+ programmes but everything on the Sonos app suggested the Arc is in Stereo 2.0

 

Ive tried changing the TV to Auto and Digital Plus, but neither seem to make a difference 

 

has anyone else experienced this?

 

thanks

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    mpflAnswer
    Lyricist I
    July 30, 2020

    I have an LG C8 with an Arc as well. In the C8 Sound settings you can set the HDMI ARC output to be either Auto or PCM. I’ve found that it will only output Stereo 2.0 when set to PCM. Auto provides a proper surround stream.

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    19 replies

    Paul A
    Paul A
    Retired Sonos Staff
    July 25, 2020

    Hi @gcsg1.

    Welcome to the Sonos community and thanks for reaching out to us.

    I would like to share with you this link inside the Sonos community that discusses the same topic as you have.

    I hope this helps.

    Please let me know if you still have further questions or concerns. We are always here to help.

    Thanks,

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    gcsg1Author
    Contributor I
    July 26, 2020

    hi Paul

    Thanks for the reply,  but the link won't let me view a preview discussion?

    Whats the topic  called or question its unde

    Thanks

    Paul A
    Paul A
    Retired Sonos Staff
    July 28, 2020

    Hi @gcsg1.

    Thanks for the feedback.

    The title of the topic is Sony Android TV KD75X8000G + Sonos Arc. The topic may have some key points that you may want to consider trying out even if you guys have different TVs. It may work.

    Please let me know how it goes. We are always here to help.

    Thanks,

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    gcsg1Author
    Contributor I
    July 28, 2020

    Hi Paul

     

    Thanks for this

    As far as I'm aware the LG C8 TV should passthrough DD5.1, 

     

    I just want to get the most out of my Arc soundboard

     

    That's why I'm trying to see if the Sonos app should indicate its playing DD5.1 when, as am example  im watching Atmos through Netflix app on my TV

    As it always indicates Stereo 2.0im not sure and just confused 

    And to be honest a little disappointed 

    Any help would be appreciated 

    Paul A
    Paul A
    Retired Sonos Staff
    July 28, 2020

    Hi @gcsg1.

    Thanks for the immediate response. 

    I would like to recommend rebooting the TV, unplug the device from power and plug it back after 10-15 seconds. After the TV is done rebooting, reboot the Arc doing the same thing unplug from power and plug it back to power. once everything is good, submit a diagnostic while we have audio coming out of the Sonos Arc to be able to check what is the Arc receiving from the TV.

    Please let me know how it goes. We are always here to help.

    Thanks,

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    gcsg1Author
    Contributor I
    July 28, 2020

    Hi

    ive submitted a diagnostic #61147218

    i was playing the Witcher on Netflix

    thankd

    Paul A
    Paul A
    Retired Sonos Staff
    July 28, 2020

    Hi @gcsg1.

    Thank you for submitting a diagnostic and for the immediate response.

    I would .like to share with you the information found on the diagnostic. Based on the submitted diagnostic, You have the Sonos Arc and no other Sonos devices. As the diagnostic indicated, it is only showing a 2.0 signal being captured since there are no Sonos Sub and Sonos surrounds speakers bonded to it. the Sonos Arc would only be able to interpret a 2.0 signal even if you are watching Dolby Digital 5.1 since there are no other speakers that would interpret the data from the TV.

    I hope this helps and clarifies everything. 

    Please do not hesitate to reach out is you still have further questions or concerns. We are always here to help.

    Thanks.

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    Silverthorn
    Prodigy II
    July 29, 2020

    Hi, I’ve recently set up my Sonos Arc, I have an LG C8, I know I won’t get true Atmos due to only using the arc port as the C8 doesn’t have earc 

     

    i tried Netflix and Disney+ programmes but everything on the Sonos app suggested the Arc is in Stereo 2.0

     

    Ive tried changing the TV to Auto and Digital Plus, but neither seem to make a difference 

     

    has anyone else experienced this?

     

    thanks


    Have you turned on CEC. On LGs I think it is called simplink?

    "I saw the Stooges and the MC5"
    gcsg1Author
    Contributor I
    July 29, 2020

    Hi Silverthorn

    Thanks for the reply

    Yes Simp link is set to on

    Silverthorn
    Prodigy II
    July 29, 2020

    Hi Silverthorn

    Thanks for the reply

    Yes Simp link is set to on

     

    Must be something in the menu. I would have a look at some other settings perhaps. 

     

    To be clear, you are talking about Netflix on the TV? Not some other device connected to it? Netflix should be mostly Dolby surround of some kind.

    "I saw the Stooges and the MC5"
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