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M1westwood
M1westwood
Contributor I
June 12, 2025
Answered

Testing atmos functionality on Arc Ultra

I just got an arc ultra.  Connected through a regular arc port.  I cannot tell if the spatial effects are working correctly.  Is there a way to test this?  Like a youtube video with sounds that ping around the room?

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jgatie
jgatieAnswer
June 12, 2025

YouTube videos from a free account, even those listed as Atmos, are downgraded to 2.0 PCM to save space.  You can go here:

https://www.dolby.com/ja/about/support/guide/downloadable-dolby-atmos-trailers/

Or here:

https://www.reddit.com/r/sonos/comments/1ggy9jd/dolby_atmos_natures_fury_trailer_and_test_tones/

To get actual Atmos trailers.  Download to a USB drive and connect to your streaming device or TV to run them. 

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leo07
Prodigy I
June 13, 2025

Try to watch content in Apple TV+, they have all their content in Dolby Vision/Atmos and sounds really good or in Netflix and Disney+ have some content that sounds spectacular, like Stranger Things. But yes, as Stanley said not all content is good by being in Atmos, specially in the music I think.

    GuyinPA75
    Enthusiast I
    June 16, 2025

    OK, I confirmed using the Dolby app that I am streaming in Dolby Atmos. That’s what the app is seeing. However, I am just disappointed in the lack of separation between the sound. I thought it would be more akin to a 5.1 surround system or better. I think I was just expecting a little too much from the speaker because I hear nothing from the side or above

    There are numerous threads in the forums here with people very dissatisfied with separation from the Arc Ultra. The feedback given in one threads was Sonos saying their, super, duper, world class, sound engineers say that is the way it is and there is nothing wrong with that since it is intended to be this way. Guess that's what you get after paying premium price for supposed premium product.

    Many people have simply suggested allowing us a center channel slider that would help separate the channels better. Mainly since the center channel is noticeably louder than virtual fronts.

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