Can the ARC upmix a Dolby 5.1 sound to use up firing speakers to create a pseudo Atmos sound? I know it will not be as defined as true Atmos but I would want the ARC to use all the available speakers for the fullest sound possible.
Sonos ARC and Dolby 5.1 upmix
Best answer by melvimbe
The whole point of atmos is to have audio that logically would come from above to arrive from above. There is no way for the Arc, or any other audio equipment to really synthesize that. All it could really could really do is apply the front audio channels to the upfiring speakers at a lower volume perhaps. I’m not really sure if the Arc does that, but it certainly doesn’t send audio through those channels in a way that does not sound natural. I do know that the side speakers due fire and play left and right channels accordingly when there is no left/right surround channels of audio.
In short, the Arc does do what it can to provide the best sound possible given the source material it has to work with, which might actually mean the upfiring speakers do nothing.
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