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Have just bought a new Beam Mk 2 to pair with 2023 LG OLED 42" TV. Works fine but cannot get Atmos.

Have followed various tips (see below) but Sonos app does not show Atmos in 'now playing' or 'system/about'.

  • Using HDMI-2 (eARC) on TV to link to Beam using Sonos-supplied HDMI cable

  • HDMI Input Audio Format - Bitstream (on all HDMI outputs)

  • Digital Sound Output - Passthrough

  • eARC Support: On

  • Content - tried 'The Tomorrow War' via Amazon Prime among others which should be in Atmos

  • Source - have tried built-in LG app (Prime) and Fire TV Stick 4K Max (Atmos-capable) - no difference.

TV settings show Atmos enabled (but greyed out) but I think that only refers to TV speakers (I've selected HDMI-2 output on the TV sound settings).

I've just ordered a different HDMI cable on Amazon to see if that's the issue though I'd have hoped the Sonos-supplied one would be ok.

Sonos app and Beam 2 have both been updated to latest software.

Any help greatly appreciated!

I tried Prime's The Tomorrow War on my Beam 2 and it played Atmos. There are two things you should confirm:

1. You pay the Prime add-free tier

2. Your audio language on Prime is set to English. Not the dialogue boost options 

Thank you- I took out a subscription to Prime ad-free and The Tomorrow War immediately played on Atmos. I think the same applies to Netflix (only the top tier has Atmos at £17.99pm).

Do you know if playing content via youtube/browser apps on native TV or a 4K max FireStick will play atmos?

Do you know if playing content via youtube/browser apps on native TV or a 4K max FireStick will play atmos?

Sorry, can't tell. I only use Roku TVs and Roku sticks. But, I don't think YouTube has Atmos at all.

Thank you- I took out a subscription to Prime ad-free and The Tomorrow War immediately played on Atmos. I think the same applies to Netflix (only the top tier has Atmos at £17.99pm).

Do you know if playing content via youtube/browser apps on native TV or a 4K max FireStick will play atmos?

 

99% of YouTube content, even the ones labeled Atmos, are downmixed to PCM 2.0 when they are uploaded.  

Thanks - that would explain a lot.

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