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Airgetlam
AirgetlamAnswer
June 22, 2025

In general, the Arc Ultra uses volume commands sent through CEC (HDMI-ARC) from the TV set itself, and isn’t connected directly to the remote. 
 

You probably need to connect the remote properly to the TV, and let the TV communicate volume to the Sonos Arc Ultra across the HDMI cable that connects it to your TV’s ARC port. 

Bruce

5 replies

Senior Virtuoso
June 22, 2025

Any suggestions as to how to make my Xfinity remote control volume work with my arc ultra sound bar?

What have you tried? Have you seen this https://support.sonos.com/en-us/article/control-sonos-home-theater-with-your-tv-remote ?

Airgetlam
AirgetlamAnswer
June 22, 2025

In general, the Arc Ultra uses volume commands sent through CEC (HDMI-ARC) from the TV set itself, and isn’t connected directly to the remote. 
 

You probably need to connect the remote properly to the TV, and let the TV communicate volume to the Sonos Arc Ultra across the HDMI cable that connects it to your TV’s ARC port. 

Bruce
ProkeyAuthor
Contributor I
June 26, 2025

Thank you Bruce 

106rallye
June 26, 2025

Is the XFinity remote part of a settopbox? Because then teh TV should relay any commands it gets via CEC from the box to the soundbar.

ProkeyAuthor
Contributor I
June 26, 2025

Yes.

Thank you