Samsung KS8000 with Sonos ARC no Dolby Digital Plus signal

I would really like to know the answer to this too. I have the same TV and plan on getting the new ARC soon. 

i have the same issue - trying to get Atmos through sky q.  When I select dolby digital plus in the settings and select a UHD channel that supports Atmos it goes silent!!  Desperate to find out why!!??

rtings.com says “ The TV supports 5.1 passthrough for Dolby Digital and DTS, but it is necessary to select the correct audio type in the sound settings, since it doesn't change automatically “. It also says the ARC port is HDMI 4.

The first two posters do not indicate what their Atmos source device actually is, which might be significant.

My HDMI cable for the Sonos Arc is connected to the Arc port

Hi everyone, sorry for the late response and thank you for reaching out. @funboyleigh @Domx360, welcome to the community.

@Domx360, I looked for a user manual for your TV. I would like you to check if going to your TV Settings > Sound > Expert Settings if you see HMDI audio settings.

Also in the sound settings, select audio out in the select speaker section.

If you’re still having issues, please take a diagnostic and reply with the confirmation.

@funboyleigh, that’s good that the Sonos Arc is connected to the HDMI-ARC port of the TV. Now, I would like to know the model of your TV. So, I can also look for a user manual.

If you have other concerns, feel free to reach out.

I have a similar Samsung tv (not exactly the same model) but I am only able to select Dolby Digital + from the audio menu if I have audio playing in that format while I make the selection.  So for example, if I go into Prime Video app on my tv and play Jack Ryan season 2, while its playing go into Setting-->Sound-->Expert and make sure HDMI Input Audio Format = Bitsream and then change Digital Output Audio Format to Dolby Digital +.  It seems to only let you select it if that format is playing.

I hope this helps.

@Kyle A thanks for the mention,  my TV is a Samsung ue49ks8000T - I look forward to your reply.

Hi @funboyleigh, thank you for the update.

I found settings that we would need to check in your TV settings.

Select Bitstream for the HDMI Input Audio Format 

Select DD+ or Auto for the HDMI Output Audio Format. The Auto setting would be the best if the option is available.

You should find the settings under Expert Settings in the Sound section.

If you still have issues, try playing the UHD channel and take a diagnostic check and reply with the diagnostic number

Here’s how: Settings > Help & Tips > Submit Diagnostic. 

Thanks for the posts - been reading them as I have SkyQ, Arc and Samsung KS8000. I also have silence when SkyQ set to DD+ and Atmos content viewed / listened to.

Spoke with Samsung who said that the TV supports DD+ (although it’s not an option on the Expert settings in Audio settings) - they said it “auto” recognises DD+. So there’s no menu option only automatic recognition! None of the Apps on the TV (Netflix and Prime) seems to display Atmos (DD+) as an option. Was thinking the Sonos Arc maybe needs to give a signal to the TV to accept DD+ from the Sky box ?

Any thoughts as I’m stuck, please? Thanks Steve 

See this topic on Change.org

DD+ is only supported in the sense that the tv can read the signal and thus produce sound, but passthrough is not a thing.

I’m in the same boat (49KS7000, =49ks8000 in the US)