Adding the One SLs as surrounds should not change your ability to play Atmos content to the Beam.
Make sure the TV is set to these settings:
Digital Audio Out: Auto 1
Dolby Digital Plus Output: Dolby Digital Plus
Pass Through Mode: Auto
eARC Mode: Auto
Test the films Black Panther on Disney+ and The Matrix on Max.
Configuration is as mentioned, still most of the content is played on a lower audio quality, however, The Matrix is detected on Atmos, this confirmed via Sonos app.
Not sure if there's any other option.
It may be time to submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it.
There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.
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 network and Sonos system.
Configuration is as mentioned, still most of the content is played on a lower audio quality, however, The Matrix is detected on Atmos, this confirmed via Sonos app.
Not sure if there's any other option.
So Dolby Atmos works on the Max app. Good.
Now let’s check Disney+. When you play Black Panther on Disney+, what audio format is displayed in the Sonos app?
Configuration is as mentioned, still most of the content is played on a lower audio quality, however, The Matrix is detected on Atmos, this confirmed via Sonos app.
Not sure if there's any other option.
So Dolby Atmos works on the Max app. Good.
Now let’s check Disney+. When you play Black Panther on Disney+, what audio format is displayed in the Sonos app?
Playing Black Panther the audio is Stereo PCM.
The whole Disney catalogue is a lower quality than the one mentioned in the information about the movie/show.
In the Disney+ app settings, make sure the Data Usage setting is set to Automatic. Also make sure you are playing the ORIGINAL language audio track.