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Dolby Atmos issue using Beam2 and LG OKED

  • March 10, 2025
  • 2 replies
  • 130 views
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I have an LG OLED TV and have bought a Beam 2 to add to my sub mini and era 100’s to create a home theatre.

My TV has Dolby Atmos and all the settings for this are available.. until I connect my Beam through the HDMI ARC port.

No sources I use show Dolby Atmos, and all the TV settings are greyed out.

I had a call with Sonos support who connected to my system and confirmed all settings and connections are correct. He then convinced me that the Dolby 5.1 I am getting is better than Atmos.

I am not convinced that it is based on my Sons experience with Samsung & Beam.

Can anyone advise? I am considering returning the Beam as I feel I am not getting the best experience for my money which is disappointing having built up the system based on Sonos products 

Any advice is welcome. 

Best answer by Hibbsy

Thank you for the comprehensive reply. I have resolved the issue by resetting the LG TV by switching off the power supply and holding the on/off button for 30 seconds, suggested by LG customer support. I watched Indiana Jones, Dial of Destiny through Apple TV app and the sound showed as Dolby Atmos on the Sonos app. It sounded amazing!

 

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2 replies

Airgetlam
  • Airgetlam
  • March 10, 2025

Couple of things. First, Dolby Digital 5.1 is not ‘better’ than Atmos, as a codec. However, your Beam gen 2, while up it can interpret Atmos, it doesn’t have the upward firing speakers built in, so it interprets the signal into the speakers it has.

Second, Atmos (and Dolby Digital) are codecs. That means the show being watched must send that codec. You’re extremely unlikely to get Atmos out of 90% of the content on your TV, unless you’re watching movies created in the last two years exclusively. Most sports and news programs are either stereo, or at best Dolby Digital. You’d need to see the Atmos sigil on the broadcast before your TV would send the Atmos signal to the Sonos.

Which brings up the third point. Not all TVs (or cable/satellite boxes) have the ability to pass an Atmos signal to the Sonos. While the Sonos is reporting to the CEC system in your TV that it can accept Atmos, that system may not be able to receive and process Atmos, which it wouldn’t be able to pass on to the Sonos.

So all sorts of misunderstandings, and false information you’ve received. 

For us to help you further, we’d need specifics about your LG OLED TV, specifics about what is connected to it (and how), and specifics about what you’re watching as a test case. 

Bruce
    H
    • Hibbsy
    • Author
    • Contributor I
    • Answer
    • March 11, 2025

    Thank you for the comprehensive reply. I have resolved the issue by resetting the LG TV by switching off the power supply and holding the on/off button for 30 seconds, suggested by LG customer support. I watched Indiana Jones, Dial of Destiny through Apple TV app and the sound showed as Dolby Atmos on the Sonos app. It sounded amazing!

     

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