Use the Bose Wireless Bass Module 700 to enjoy your favorite movies and series extra intensely. The subwoofer is especially made for the Bose soundbar 500 and 700 and the surround speakers from the smart collection. Use them together for the best sound experience. The subwoofer emphasizes the bass tones. The sound of bird of prey flying overhead or a race car driving by becomes even more realistic. Wirelessly connect the subwoofer to the soundbar. This way, you won't be bothered by cables running across the room.