Dolby Atmos streaming issue with Sonos Arc Ultra and BenQ TK710 projector

Hello! I use my Arc Ultra connected to my eARC BenQ TK710 dolby atmos capable projector. I use an ATV4K 2022 edition. Very often whenever I want to stream Atmos content on any platform I get no audio at all! The Sonos app shows no audio! If I force the ATV4K to play DD5.1 then it works again! Or If I leave it on Auto, Atmos on then the 5.1 content reads Stereo PCM on the Sonos app. Is this happening to you? I have changed cables..I am using Ruipro 8K fiber optic cables 25 ft the green ones and still the same issue. I have to disconnect the Arc from power and plug it back in for it to work again with Atmos.

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Apple TV 4K, tvOS 18

Posted on Jan 16, 2025 8:17 PM

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2 replies

GapzHn Author

Level 1

17 points

Jan 16, 2025 9:32 PM in response to JM-Master

It seems lots of ATV4K have dealt with this problem for years now: https://www.reddit.com/r/appletv/s/lUTgRpDQsH The problem is that it happens across any app (Netflix, Max, Disney +) Atmos movies produce no sound at all and 5.1 content downgrades to stereo pcm and with audio mix ups (only surrounds play with no voices dialogue).

Jan 16, 2025 8:32 PM in response to GapzHn

Do you have issue with the sounds on other apps on the Apple TV ?

If the issue only happening on the connected device or Sonos app you may need to contact Sonos support or BenQ support for further assistance.

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Dolby Atmos streaming issue with Sonos Arc Ultra and BenQ TK710 projector