No options for Ray owners yet on the forums I see!
I’ve spoken to both Sonos and Samsung about this and neither can resolve it. I’ve discovered that this model of TV possibly isn’t capable of passing through a DTS signal via Optical Out. I’ve tried this with several bluray discs on both a PS5 and a Sony UHD player.
Under Expert Settings Bitstream is selected. When receiving a Dolby signal, it allows to choose between Digital Output Audio Format PCM or Dolby Digital. With DTS, only PCM. Would that PCM signal be the TV outputting 2.0 or the Ray receiving the DTS signal and outputting it as 2.0?
Unless the Sonos can’t process a DTS 7.1/5.1 True HD signal? Does anyone know? It’s still a bit of a mystery.
edit - it seems Samsung only allowed for DTS passthrough on TV’s from 2020 onwards. Mystery solved; but if anyone else is having the same problem, there’s your answer.