A:Answer Hello Bob! The Roku Wireless Subwoofer isn't required to use the Roku Wireless Speakers. However, a Roku Wireless Subwoofer enhances your listening experience with deeper, richer bass, letting you enjoy more realistic, full-range sound from your favorite songs, movies, TV shows, and more. To setup and use your Roku Wireless Speakers you only need to attach the power cable and pair each speaker to a Roku host device such as a Roku TV, Roku Streambar, Roku Streambar Pro, or Roku Smart Soundbar.