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TheLucasRomeo
Contributor I
October 25, 2024

Not Receiving Dolby Atmos

  • October 25, 2024
  • 13 replies
  • 458 views

I am not getting Dolby Atmos at home. My setup consists of a Sonos Arc, Sub, and 2 Era 300 surrounds. I have the highest subscription to Netflix and a Samsung 4K TV from 2017 (UN65MU6300). When using Netflix on my television most of the movie/series titles produce 5.1. When I select any of the content that is displayed in 5.1 and I go to my TV settings, the highest audio output that is produced is Dolby Digital+ which I imagine is not the same as Dolby Atmos. Am I not receiving Dolby Atmos because I have an older TV, or does this not play a factor? Do I need a TV that has can broadcast in Dolby Atmos? Thank you in advance for your feedback.

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13 replies

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TheLucasRomeoAuthor
Contributor I
October 25, 2024

The settings on my TV does not have anything named passthrough (I think because it's from 2017), only HDMI-CEC. My television also has only ARC, not eARC if that matters.

I read that Dolby Digital+ takes Dolby Atmos and compresses the signal. If I was actually getting Dolby ATMOS, it would appear in my Sonos app as Dolby ATMOS and not Dolby Digital plus, correct?

furacaopr
Prodigy III
October 27, 2024

Yes, it will appear as Atmos. And no need for eArc. Arc is fine enough.

As for the audio output format, instead of passthrough, bitstream maybe? You could also share some pictures of your audio settings, if you wish.

TheLucasRomeoAuthor
Contributor I
October 28, 2024

Yes, in the sounds settings I can choose between bitstream or PCM. I have been using bitstream, whereas before I was using PCM. I’m not sure that I could tell a difference to be honest.  I borrowed an Apple TV 4K over the weekend. The show we are watching is broadcasted in Dolby ATMOS and Dolby Vision. On my older Apple TV HD, all I could get was audio out PCM, and my video was in 4K. When I used the 4K Apple TV, the audio output was in Dolby Digital 5.1, so there was an upgrade there. However, I was expecting the Sonos app to display Dolby Digital+ since my TV can output Dolby Digital+. After speaking with a tech friend, and communicating with those on this forum, I believe that I have come to the conclusion that my TV cannot handle Dolby ATMOS and that an upgrade is required if I want to experience the full effect of Dolby ATMOS, and Dolby Vision. 

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