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 I’m a little confused. I have an Apple 4K going into a TV that’s older than a few years. Will the Atmos sound from the TV be pushed through the TV via the eARC/eHDMI connection even though Atmos isn’t native to the TV itself?

Thank someone told me to change the pass through to auto and everything started working after the last update guess they stagger updated between Europe and USA. Glad it’s all working finally 


So does anyone have pcm input selected rather  thank bitstream  I have output set to auto and I get atmos from appletv 


Hello all,

After waiting quite a while, I finally got my Arc.  I keep seeing that Apple TV won’t play Atmos through the ARC port.  I have my Apple TV 4k connected to my LG C7 which is connected to my Arc via the HDMI2 ARC.  I didn’t change any settings on any devices, and I tested out a few iTunes movies that had Dolby Atmos and the Sonos app was saying it was playing in Dolby Atmos.  This is my first exposure to Dolby Atmos, and I gotta say I was underwhelmed.  I was anxiously awaiting the 3D sound aspect (I have two One SL’s connected too) but I really didn’t get any 3D sound.  It’s located in a pretty small room, mind you, and I did the true tuning or whatever it’s called.

Is it possible that even though my app says it’s playing Atmos, that it actually isn’t?  Am I expecting too much from 3D sound?  I tried Baby Driver’s opening scene and Spiderman Homecoming as these were listed as some of the better sounding ones on a quick Google search but I didn’t really hear anything special. 

Thanks in advance for any input!


Hi folks. Thanks for your responses and updates here. 

@babyjor10, about your case, can you please check if your Apple TV is using LPCM? As it is not yet supported by Sonos. Below are the thread links for reference.

https://en.community.sonos.com/troubleshooting-228999/no-dialog-through-arc-from-apple-tv-4k-6847888

https://en.community.sonos.com/home-theater-228993/did-ios14-tvos14-quietly-bring-atmos-audio-to-airplay-2-6848270

You can try a different source like the built-in apps on your TV and see if it will make any difference. If it shows playing Dolby Atmos, meaning it does playing it. 

Try to submit a diagnostic to further check on our end. Reply to us with the confirmation number. 

Just let us know. We and the community are always here to help.