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jayh89
Collaborator I
November 10, 2020

Multichannel PCM via Samsung

  • November 10, 2020
  • 18 replies
  • 2708 views

The update today gives us multichannel LPCM support for Sonos Arc. However, I can’t seem to get this working on my 2020 Samsung Q85T QLED. For example, if I put a DD 5.1 blu-ray in my PS4, I only get Stereo 2.0. No matter what settings I use. I was told to do “passthrough” on my TV and “dolby bitstream” on my PS4, this didn’t work (I also tried linear PCM setting on PS4 and auto on the TV). Similar with games. I get “Dolby Digital 5.1” but not this new multichannel LPCM… help??

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18 replies

UKMedia
UKMedia
November 10, 2020

Does your TV support eARC?  If not then your TV probably won’t passthrough the Audio stream to the Arc.  I use the HD Fury Arcana product to split the Audio and Video signal before it reaches my TV and can now get Dolby Atmos on my Arc, even though my TV doesn’t support it or eARC.

Remember: Sometimes Red Wine helps :)
jayh89Author
Collaborator I
November 10, 2020

Does your TV support eARC?  If not then your TV probably won’t passthrough the Audio stream to the Arc.  I use the HD Fury Arcana product to split the Audio and Video signal before it reaches my TV and can now get Dolby Atmos on my Arc, even though my TV doesn’t support it or eARC.

Yeah my TV does have eARC and I have the setting turned on :( 

UKMedia
UKMedia
November 10, 2020

I’m clutching at straws but have you set Dolby Atmos Compatibility mode to ‘On’ in Settings>Sound Expert>Settings

Remember: Sometimes Red Wine helps :)
jayh89Author
Collaborator I
November 10, 2020

I’m clutching at straws but have you set Dolby Atmos Compatibility mode to ‘On’ in Settings>Sound Expert>Settings

Don’t have that option but atmos does work for me. I just don’t get this multichannel lpcm. 

kevin_d_black
Lyricist II
November 15, 2020

Though it was just me. 

I have the same tv and pcm from my ps5 just won't work even after the update. 

I think the earc is dodgy on this TV. I continually have to reset it to get sound working. 

jayh89Author
Collaborator I
November 15, 2020

I actually think it might be a Samsung thing. They need to issue an update. 

kevin_d_black
Lyricist II
November 15, 2020

I contacted Samsung. They're already aware of the issue and are working on a fix. No eta unfortunately. 

    Cormboni
    Contributor I
    November 17, 2020

    I contacted Samsung. They're already aware of the issue and are working on a fix. No eta unfortunately. 

    Will this be fixed for all 2020 Samsung TVs, or just the Q85T? I have a TU8000, and according to Samsung support and the manual, LPCM is supported. It just doesn’t work on the Arc. Is this in any way a Sonos issue?

    Airgetlam
    Airgetlam
    November 17, 2020

    No. See my response to your other thread.

    If this were a Sonos issue, you’d see complaints from users of all TV manufacturers, not just Samsung users. 

    Bruce
    jayh89Author
    Collaborator I
    November 25, 2020

    I asked Sonos about this and they said LPCM on PS5 and passthrough on the TV. This only gives me Stereo 2.0 though. If I change the PS5 to Dolby Bitstream, I get DD 5.1. So either Samsung or Sony have an issue somewhere that means I can't get multichannel LPCM 5.1??

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