I recently bought and set up both a Beam Gen 2 and Sub Mini. The Beam was set up fine and works brilliantly, however having set up the Sub Mini an hour or so later, it connected fine (although both products seemed to have issues with the NFC identification during set up - first time was fine on Sub Mini, but second time had issues). However, the Sub Mini, whilst set up went ok, has the white light on, but doesn’t make any sound (having tried with the TV and by casting music with heavy bass to the Beam).
I’ve checked on my Google Wifi app and only the Beam seems to show as connected to the network.
This is pretty disappointed after having decided to invest in Sonos over other home cinema systems.