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Hello,

Newbie here, first time posting and new to Sonos. I’m looking into installing a surround sound system in a medium to large open room for watching movies and playing music. Was thinking of getting the Arc Ultra, Sub 4 and a pair of Sonance 8” ceiling speakers with the Sonos amp. Using ceiling speakers due to wife doesn’t want to see  speakers on stands behind couch. Thank you for ,the assistance. 

Should I connect amp and Arc sound bar to router with network ?

Will my Samsung tv remote control my audio in tv mode?

Depends on the distance between your Arc and the Amp controlling your surround speakers. Normally they connect across a hidden 5Ghz connection, my second choice would be to wire them both to the router, due to the small additional networking delay.

Yes, your TV would communicate volume commands to the Arc across CEC (ARC) via the HDMI connection. However, the TV’s remote control will not work when streaming music, you’ll need to use a controller for that.