Sonos, Apple TV 4K, and Dolby Atmos
I (somewhat) recently purchased a Sonos system to use as my TV speakers and for listening to music around the house. Overall, just about everything worked out-of-the-box, but I did have some trouble getting Dolby Atmos working with my Apple TV 4K, specifically. I eventually got it working after fiddling with the settings on my LG TV for a while, but I figured I’d write about it here in case it will help others or if I forget. :P
My current setup includes the following:
- LG 55UP8000PUA 55" 4K Smart UHD TV
- Apple TV 4K (3rd generation) Wi-Fi + Ethernet
- Sonos Beam (Gen 2)
- Sonos Sub (Gen 3)
- 2 x Sonos One SLs
- Sonos Five (connected directly to my ELAC Miracord 50 Turntable)
When I first set things up, I noticed that the Sonos app only showed “Stereo (PCM)” in the player screen, even when playing back content that supported Dolby Atmos, (I chose Star Wars: Andor as the source material for testing). I did however notice that I could get Dolby Atmos to work on the built-in Disney+ app on my LG TV, just not the Apple TV. But I like my Apple TV, so I kept digging.
After drilling through the TV’s menus a couple of times, the settings I ultimately changed to get everything working were:
- Settings > Sound > eARC Support: Enable
- Settings > Sound > Digital Sound Output: Pass Through
- Settings > Sound > Select HDMI Input Audio Format: Bitstream
I figured out the first two fairly quickly, as I was able to find others who had similar problems online. The last one, however, took a bit longer. I eventually did a Google search for “PCM vs. Bitstream” since I stumbled across the option in the TV menus. After changing that setting I saw the Dolby Atmos logo in the playback screen of the Sonos iOS app. Yay!