Contributor I

Answered

Dolby Atmos with Sonos Arc and 2020 Samsung QLED (Q80T)

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I recently purchased a new Samsung (2020) Q80T (Q8DT- Costco) Series - 4K UHD QLED LCD TV and also purchased the Sonos Arc. I have connected the Sonos Arc via HDMI to the back of the TV (HDMI-3 (eARC-Port)).

In the Expert Sound Settings on the Samsung TV I have enabled:

HDMI-eARC Mode to Auto**

Digital Output Audio Format to Auto

Dolby Atmos Compatibility (selected and on)

I then go to Disney+, Apple TV+ or Amazon Prime on the native apps provided on the Samsung TV and chose a movie with Dolby Atmos listed in details. Once the movie plays I go to the “about my system” on the new Sonos S2 app and select the Sonos Arc to verify the audio output codec. **It displays the Audio In as Dolby Digital Plus 5.1 when HDMI e-ARC is set to “OFF” in the Samsung TV Expert Sound Settings and Dolby Multi Channel PCM 5.1 when HDMI e-ARC is set to “AUTO”. I do not have the Netflix UHD 4k plan at this time so I have not trialed this with Netflix.

I have never been able to get the Sonos Arc to display Dolby Atmos on the now playing screen or about my system in the app despite multiple attempts at changing the settings.

Note, I’m not streaming from an external device (Apple TV/Roku/Firestick etc), I’m simply using the native apps provided by Samsung which include Netflix, Apple TV+, Disney +, Prime...Additionally, aside from the Sonos Arc I have no other devices plugged into the TV. My TV is connected to my personal 5gHz WiFi and I’ve got decent speeds (30 mbps download and 25 mbps upload).

I can't understand why the Sonos Arc won't play Dolby Atmos. Is it a streaming issue - are the native apps not supporting the output? Is it my internet speeds? My picture seems great though. Also why does the codec change when the HDMI e-ARC is changed from Auto to Off. I would really love to be able to get Dolby Atmos sound coming from the Sonos Arc. Any help or guidance would be really appreciated. Thank you.

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J

jpsmith01Answer

Lyricist I

I have this same Samsung TV and just received the Arc today. It setup beautifully, and sounds great (with a couple of rear Sonos One SL speakers….Sub on the way). I originally had the same question as the original poster, but I just streamed Jack Ryan on amazon prime (using the Samsung TV native app) as a test. Dolby Atmos didn’t appear on the Now Playing screen. I went to Settings > About my system on the Sonos app, however, and I saw Dolby Atmos as the audio input to the Arc. When I went back to the Now Playing screen, Dolby Atmos was there….go figure.

so, it looks like Dolby Atmos can stream from the native apps on this Costco Q8DT!

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Alberta Beagle

Prominent Collaborator I

Here are screen shots of the Sound Setting on the Samsung.

Beagle

M

Mikelev

Enthusiast II

Thanks that's useful - different firmware in the us vs uk

B

BBH

Avid Contributor I

Besides the different Firmware, US vs UK, some have pointed to the One-Connect box as the problem. I assume the Firmware addresses the eARC differently in Built In vs One-Connect.

E

Evanvar

Contributor I

I have the q95t and I have my Arc wired straight into hdmi 3 (eARC) the Arc only shows the Arc as a HDMI Receiver as opposed to Receiver eARC - I have a horrible audio delay when using Atmos on my Xbox One X and I think a possible fix could be to enable audio pass through on the TV but this is only possible on eARC devices, which for some reason it doesn't seem to think the Arc is. Does your Q80T display the Arc as HDMI receiver or HDMI eARC?

Thanks

Man I had the same issue!!! Same tv same setup spent 6 hours with Samsung support and Sonos support and they blame each other, THERE IS NO FIX! it’s just that the tv doesn’t support eArc other than the Samsung soundbars, they even released an update 2 days ago and it doesn’t fix the issue!! $5k tv and $3k sound system, good job sonos and Samsung

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Alberta Beagle

Prominent Collaborator I

It appears the One Connect Box is the issue with eArc and the Arc. My 2020 Samsung Q80T and Arc are working flawlessly together.

Beagle

E

Evanvar

Contributor I

It appears the One Connect Box is the issue with eArc and the Arc. My 2020 Samsung Q80T and Arc are working flawlessly together.

So what return the TV? I can’t get the HDMI ports on the TV as there is no furniture close to the TV to put all the equipment and its 75 inch!

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Alberta Beagle

Prominent Collaborator I

I don’t have a solution for you. I’m just relaying what I believe is the issue. I live in Canada. Samsung doesn’t provide the One Connect Box with their sets here. It’s clearly something that Samsung needs to sort out.

Beagle

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Moniker

Lyricist III

I downloaded the Dolby dignity file Amaze In Lossless form and when I try to play it, it says ‘unsupported feature’ … I have the picture but no sound. I have the Arc, sub and surrounds with a new Samsung 55” QLED TV. Any help?

A

Alberta Beagle

Prominent Collaborator I

I downloaded the Dolby dignity file Amaze In Lossless form and when I try to play it, it says ‘unsupported feature’ … I have the picture but no sound. I have the Arc, sub and surrounds with a new Samsung 55” QLED TV. Any help?

Do you have a One Connect Box on your TV? If you do then that will be your issue for it not playing. You will have to turn off eArc in your sound settings and then you should get Atmos played via DD+. But it won’t play that trailer you’re wanting to play as it is likely done in True HD which I believe requires eArc.

Beagle

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Moniker

Lyricist III

I’m U.K. based and Do not have a one connect box. My arc is plugged direct into the dedicated Arc HDMI port.

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