Answered
Dolby Atmos disable with other speakers
I received the Arc Ultra a month ago and it works wonderfully my Sub 4 and my Era 100 in my living room. When I listen to Amazon music in Dolby Atmos it's really perfect. But if I then décide to add my sonos speakers in the dining room or elseware, then the Dolby Atmos in the living room mute the sound for a second and then comes back in HD only. I don't understand this.
