I don’t know why you’re  mentioning Monty Payton , never said any this about it, in fact Netflix has enhance its sound to HD 1.5 ( if had bothered to check this info if you looked careful on the top right of of the Netflix steen ) 

GuitatSuperstar please do don’t advice me / reply to any to me from now on with useless and unprofessional answers . I will not be reading any more of your post , you will  be waiting your tome or any others who give any such 

I’d encourage any person to post within the rules of the forum on this public thread.

If you’d rather not get people like GuitarSuperstar to post in an attempt to assist, I’d recommend that you not post here, and instead call Sonos Support directly to discuss your concern.

When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your Sonos system and network. And you’ll be in a private conversation, not posting on a public help forum, designed for Sonos users to assist other Sonos users. 

Yes we all know that 

We expect some intelligent feedback and discussion on the forum unlike “guitarsuperstar” 

He explained why. I would have helped as well except for circumstances. Glad I didn't.

Yes I agree - Gals you don’t , ( it clearly states it is in HD 5.1, so logic to answer that to say it works ) 

( one (me) had checked all these these titles  and hence mentioned tiles that don’t work, so need to reply to that if one can , and not to side track and waste everyone’s time shutting back and forth with pointless unrelated 

Please kindly do not reply with unnecessarily 

It won’t be replied or read 

Kind Regards 

Back to the original topic…

With the added ability to control the height audio levels on the Arc and how it has dramatically improved the height effect with Dolby Atmos audio, I decided to get a trial subscription on Tidal ($2 for two months). Listening to old songs with a new Dolby Atmos mix is a pretty great experience. You hear parts of the song you have never heard before. It reminds me of the first time I listened to Dark Side of the Moon in 5.1 and quad mixes on Blu-ray. It completely changed the way I listen to music. Now I wish all music was mixed in 5.1 and Dolby Atmos.

How did you get atmos music to the Arc? Phone app wouldn’t work since Airplay doesn’t support Atmos at present. Did you use a TV app or something?

@Naekyr I am using an Apple TV 4K. Here is a list of other compatible devices:

https://support.tidal.com/hc/en-us/articles/360004255778-Dolby-Atmos-Music

With the help of GuitarSuperstar on another thread, I ‘found’ the night slider I didn’t know existed and had a play today. In the absence of any proper test files to hand I picked a source I know to be ATMOS (confirmed in the app) and went about a rather clumsy but ultimately fruitful way of setting up the upward sections (eventually). 
 

Because you don’t actually completely know when the speakers are active, by playing demo media from the LG Dolby app on my CX55 whilst sliding the adjustment left to right repeatedly and fairly quickly you soon find sections with height in them. You can hear it relating to your finger movement quite distinctly when they occur and there is LMP difference when the signals aren’t present. By then nudging the media back (remember DVD loop functions? I miss them!) and repeating the section you can hear has it, you can get a feel for what it’s doing. By doing the same with various sources, I found that for a subtle effect rather than an overly dominant one, about +3 worked for me and I then tested with things I know more. Obviously, nobody’s settings will be the same as mine but the process works. I’ll probably repeat the slider approach again a few times this week and ensure I’m happy where I am with it. You look a bit daft sliding the feature back and forth, especially on an iPad, but it worked for me after pondering how I might be sure I was listening to actual upward intended media sections. 
 

I’ll also try some of the test tone links shared too instead of my rather rudimentary approach above. Thanks for these.