I think the group coördinator is the speaker from which you start the group: say the kitchen is playing radio and you ad the living room. Then the kitchen is group coördinator.

There are some older posts here discussing it in more detail but I believe teh above post got it right.

I always try to start my groups using a wired Sonos if one is going to be part of the group, seems to make things a bit more stable.

There is a growing number of posts describing a similar issue with CONNECT. I believe this is something that SONOS needs to fix in a future update.

Yes, a “coordinator” is a unit that is handling network traffic for a Pair or Group. The left speaker in a “Bonded” pair is the Pair’s coordinator and the first unit in Group is the Group’s coordinator. We don’t usually call it “the coordinator” but a soundbar handles network traffic for surrounds and SUB’s in a surround room.

Question to “buzz” - you introduced another term - what is a “bonded” pair?

Also - Is it advisable to connect the left speaker of a stereo pair to a wired network?

Thanks for responses in advance.

-jP

Bonded Pair: Two Sonos speakers configured as a left/right stereo pair, assigned a single Room name.

Unless you have WiFi issues wiring is seldom needed, if it is then usually the more you wire the better things work.

I may be mistaken but I think Sonos only uses the term 'bonded' to describe the attachment of Sub and Surrounds to a Home Theatre device. The Sub and surrounds are configured as 'slaves' to the main HT product, such as an Arc.

The HT product, Sub and surrounds communicate over a direct 5GHz connection.

I’d agree with John. I’ve always thought of it as “paired” for stereo devices, “Bonded” for the more permanent connection of a sub, or surround speakers. I suppose it boils down to the “permanence” of the setup. 

It’s been a while since I’ve done either of those. Do they follow the same process in the controller?