How many speakers can I connect to the Sonos Sub?
Pair – Pairing speakers consists of creating a stereo pair between two like models. You can pair two Play:5 (old), Play:5 (new), Play:3, or Play:1 to form a single Room. Pairing is usually meant to be permanent, although you can unpair via the settings menu, it is not an “one-touch” operation.
Bond – Bonding speakers consist of creating a single Room between two or more non-alike models. You can bond a sub with a Playbar, a single or stereo paired Play:5, Play:3, or Play:1, or with a Connect:Amp. You can also bond two Play:5 (new), Play:3, or Play:1 to a Playbar for surround. Like pairing, bonding is usually meant to be permanent, although you can unbond via the settings menu, it is not an “one-touch” operation. Note, the Sub can only be used when bonded to another unit. It cannot be used alone.
Grouping – Grouping is when you connect two or more Rooms together to play in synch. This is not meant to be permanent, you can easily group and ungroup via the Rooms menu.
“If I have just one zone with the three speakers, can I have the three speakers working/paired with the sub?.”
You can’t really have “one zone with three speakers”. However, you can have a stereo pair, which is bonded with a Sub, which is then grouped with a third speaker.
“If I go the two zones path, the Sub be configured so can be used in both zones independently?. I hope explained myself.”
The Sub can only be bonded to one Room at a time. If you wish to use it in another zone/Room, you must reconfigure to bond it to the new Room