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Hi Everyone

I cant get the ARC Ultra to show ATMOS 7.1 it will only show ATMOS 5.1

I was so looking forward to the 9.1.4 setup showing the 7.1 on the App?

I am playing on a TV with eARCH and currently using the PLEX player.
(All my 4K BluRay ATMOS disc is ripped with all content to mkv)

My Surround receiver shows it correctly.
 

My questions:

  1. Is there a difference in quality between the Atmos 7.1 vs Dolby Digital Plus 7.1 playback?
  2. Is this the HDMI problem? do I need to invest in a Switch like the FeinTech VAX04101A or the HDFury Arcana to get ATMOS Recognized correctly?
  3. Would a Shield Pro fix this problem?
  4. Has ANYONE gotten a ATMOS 7.1 to show up on the Sonos Ultra App?
  5. I can see it shows DTS 5.1 when playing old movies does this mean it now plays DTS?

Thanks looking forward to hearing from the experts :-)
Best regards
Casperse

 

 

 

Is this the answer?

Your TV can’t natively handle TrueHD, it will transcode it to DD+ 5.1 / 7.1 depending on how you’re streaming as you have found out, you can only get TrueHD via passthough, so essentially you need an external streaming box that can handle TrueHD Atmos. I use a Zidoo box for this.

Is this the answer?

Your TV can’t natively handle TrueHD, it will transcode it to DD+ 5.1 / 7.1 depending on how you’re streaming as you have found out, you can only get TrueHD via passthough, so essentially you need an external streaming box that can handle TrueHD Atmos. I use a Zidoo box for this.

 

Without know what TV you use, it’s hard to tell. If you use a TV with eARC is usually not a problem.

 

I’m more wondering what you expect to see. When I play something with Dolby Atmos (Dolby Digital + or Dolby True HD), the Sonos app will only show “Dolby Atmos” but no channels at all.

I’m more wondering what you expect to see. When I play something with Dolby Atmos (Dolby Digital + or Dolby True HD), the Sonos app will only show “Dolby Atmos” but no channels at all.

Dolby atmos in the past has just said “Dolby Atmos” in the App screen (ArcE300pairSub3 set up) and not indicated channel articulation. I don’t know if the Ultra would change this or not?

 

Without know what TV you use, it’s hard to tell. If you use a TV with eARC is usually not a problem.

My TV has eARC and its enabled in the menu LG C9

I’m more wondering what you expect to see. When I play something with Dolby Atmos (Dolby Digital + or Dolby True HD), the Sonos app will only show “Dolby Atmos” but no channels at all.


I was expecting it to show “Atmos” but I only get “Atmos” listed in the App when I play Atmos 5.1 content?
Any Atmos 7.1 is always listed as “Dolby Digital Plus 7.1” - Maybe this doesn't matter? - I just thought that I needed to get Sonos to show the “Atmos” in order to get the right sound profile, and the 100% value of the setup?

I have the Surround package - Ultra + 2 x 300 + Sub4
Playback is from TV player and I do get Atmos 5.1 through the eARC of the LG TV.
I was just looking forward to getting Atmos 7.1 throughput :-)

You are not getting Atmos… that is DD+ (Dolby Digital Plus 7.1) 

atmos audio would say “Dolby Atmos” in the same spot, it also won’t give a specific audio channel number for Atmos. 
 

I would guess your are either not listening to Atmos content, or more than likely your tv isn’t passing Atmos correctly, and/or it doesn’t pass Atmos. 

That should be easy to test, can anyone provide a link to a working Atmos 7.1 test file?
One that you now works and that will show the Atmos in the Sonos App so I can confirm when its working?

¦› Dolby Demo Trailers HD and SD – List of All Downloads

This would be much appreciated and help me to eliminate the source as the problem!

I have tested with the 7.1.4 video from https://www.demolandia.net/cinema/dolby-demo-trailers-hd/page-10.html and the Sonos app shows me Dolby Atmos.

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