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Best answer by jgatie

Setting up my arc ultra sub and 2x300 era.

Do they all need to be put in the same room?

 

“Room” is just a label.  You can name them ‘Fred’ or ‘Barney’ if you wish.  Best thing is to name the soundbar the actual name you want the room to have (‘Living Room’, ‘Movie Room’, etc.).  Then name the surrounds and Sub anything you wish (For my living room, I use “L LR Surround, R LR Surround, LR Sub).  The name really doesn’t matter, they will be incorporated into the soundbar in the end.  I just name them like that so if I do remove them from the room, I know which is which.   Do not stereo pair the surrounds.  Then follow these instructions to add the surrounds/Sub to the soundbar to make one room.

https://support.sonos.com/en-us/article/add-surround-speakers-to-a-sonos-home-theater

https://support.sonos.com/en-us/article/set-up-your-sonos-sub

4 replies

Mr. T
Mr. T
January 22, 2026

Yes, but initially add each of the Era 300s to separate rooms, do not stereo pair. Don’t worry about the given room names for them.

You can then go into the room settings for the Arc Ultra and select Add Surrounds and follow the process.

jgatie
jgatieAnswer
January 22, 2026

Setting up my arc ultra sub and 2x300 era.

Do they all need to be put in the same room?

 

“Room” is just a label.  You can name them ‘Fred’ or ‘Barney’ if you wish.  Best thing is to name the soundbar the actual name you want the room to have (‘Living Room’, ‘Movie Room’, etc.).  Then name the surrounds and Sub anything you wish (For my living room, I use “L LR Surround, R LR Surround, LR Sub).  The name really doesn’t matter, they will be incorporated into the soundbar in the end.  I just name them like that so if I do remove them from the room, I know which is which.   Do not stereo pair the surrounds.  Then follow these instructions to add the surrounds/Sub to the soundbar to make one room.

https://support.sonos.com/en-us/article/add-surround-speakers-to-a-sonos-home-theater

https://support.sonos.com/en-us/article/set-up-your-sonos-sub

    Stanley_4
    Stanley_4
    Grand Maestro
    January 22, 2026

    If you want a home theater Room the above advice is what you want.

    You  could set the Arc and each 300 up as a different Room and put each in a different room of your house. You could then seamlessly stream music on any/all when set up like that but the TV sound would see a slight delay going to the 300s.

    The Sub can't be a Room, it has to be added to an existing Room.

    The different setup possibilities can be confusing!

      stevemgAuthor
      Avid Contributor I
      January 23, 2026

      Ty guys

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