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Answered

4k blu-rays have no sound on Arc Ultra

  • May 1, 2026
  • 26 replies
  • 238 views

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26 replies

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  • Prodigy II
  • May 9, 2026

The system will play a soft signal over the rears when receiving a stereo signal. Probably isn’t Dolby Pro-logic though.

To me this has always been the case, but it might have been introduced somewhere before 2019 - my first Sonos device was bought late 2018.



no, this was quite noticeable. Never heard much if any up mixing before hand. A proper surround mix.