Hey all -
I FINALLY got ATMOS working correctly with my new Sonos-based home theater setup using an Xbox Series X and a newly purchased Samsung QN90A series television (85”).
It took me days to get it synced right and get rid of an audio delay in the whole setup, especially with dialog. Here’s how to pull it off. The important part is that you have to configure things to let the ATMOS/surround sound signal go straight to the ARC for decoding instead of the TV trying to help along the way (causing audio delays and other issues).
Home Theater Setup:
Xbox Series X → QN90A TV via HDMI 4 (the only HDMI 2.1 port on the TV)
HDMI 3 → Sonos ARC (the only port on the TV that supports eARC)
(Not that I’m using two PLAY:1’s as surrounds and a SUB as well)
Samsung QN90A settings:
- eARC set to auto
- Audio set to Pass-through IMPORTANT (NOT auto or PCM)
- ATMOS turned on
Xbox Series X settings:
- ATMOS for home theater (HDMI)
- IMPORTANT: in other audio settings, MAKE SURE PASS-THROUGH IS TURNED ON. Otherwise you’ll still get dialog delays even if the TV is set up properly.
All of that sounds simple in hindsight, but I spend days trying every combination of stuff, and even was hooked up through an HD Fury Arcana for a short time. This method gets the audio perfect, highest quality ATMOS, and synced up about 98% as nicely as the Arcana does.
Hope it helps someone else out there! I googled the crap out of this when I was setting things up and couldn’t find anything solid out there.