I have a Yamaha SR-B30A sound bar connected to my ARC and the Vizio Tv ARC.I do not have a cable box etc...! Just my Roku! I can't get Dolby Atmos at all. But the sound bar works! Any settings on the Vizio or Roku Ultra. I should know? P.S I do not have 5-1 just the sound bar. And the sound bar can get Dolby Atmos! Thank You!
