A:AnswerNo, you need to have WiFi in your home so you can EQ the system and or add a Bass Module. If you want a Bose without internet I would go with the Bose TV speaker soundbar for $249.00 I also have this in my home you don't need WiFi it sounds really good you just plug it in and your all setup.
A:AnswerI would recommend contacting Roku to find out if their remote will work with your soundbar but if it works with the tv, it is likely it will be able to control the soundbar volume.
A:AnswerWhen placed in Bluetooth mode, it will connect with the last connected Bluetooth device. To connect to a different device, you can use either the Bose Music app, or connect via the Bluetooth menu of the other device.
A:AnswerI don't believe so. The Bose 300 has Bluetooth built in. If your other speakers don't have Wi-Fi, it should use Bluetooth. You can go through the Bose Music app and it will walk you through the networking process with a few clicks.