Hi
Excuse me if I seem to be reciting basic Sonos 101; but I want to make sure you understand how Sonos can be configured and the versatility therein.😊
Every Sonos speaker or component can be configured as a separate room. You can even have separate rooms inside the same space. Notice I used the term “same space” which will become clear in the next few lines.
For example I have my Home Theater consisting of Arc, sub and Era 300’s as surrounds named as LG. I have a pair of Fives named as Fives. In addition to those I have an Amp with turntable named as Project. LG, Fives and Project as room names all reside in the same space which I call my Media room for obvious reasons.
Note: As @jgatie mentioned surrounds are not independent as they are part of the Home theater directed by a Sonos soundbar...in my case the Arc.
To your setup if you use the Era 100’s as surrounds with your Beam2 they are no longer independent speakers but are directed by the Beam2. Therefore what ever the source sent to the Beam2 the surrounds will follow suit either for music (in stereo) or as surrounds for movies.
If you decide not to use the Era 100’s as surrounds with the Beam2 you can actually have three (3) independent rooms. For example Beam2 named as TV, Era 100 named as Kitchen and an Era 100 named as Lounge.
The speakers can all reside in the same space or in separate rooms within your home. You can also send different genres to each speaker (room) simultaneously. Jazz Music/Movie to the Beam2, country music to one Era 100 and rock music to the other Era 100.
You can group all to play the same music genre 3 x 3, 2 x 1, 2 x 0 or 1 x 0. Sonos speakers do not turn off nor can you do so. They are just in a low power state when no signal is received.
Note: Do not send TV audio to a speaker not associated with the Beam2 as a 75ms delay will be experienced to that speaker causing an echo effect.
I hope I’ve made everything as clear as mud 😂. Feel free to comment.
Together Everyone Achieves More = T.E.A.M.