A:AnswerI think you mean a Sub Gen 3. You can pair this sub with a Sub Gen 3 with the appropriate Sonos soundbar. If you meant a Beam Gen 2, yes you can pair this sub with it. There is no Beam Gen 3 at this time. Gen 2 is the latest Beam.
A:AnswerYes you'll need wifi or connection to your cell phone providers network that is if you do not have it hard wired. I do believe if your system is hard wired then it may still work if your wifi is down. I've yet to try this but will and maybe I can help further with this question.