Bose Bass Module 700 Wireless Subwoofer (Black)Bose 700 Subwoofer System Black Surround Sound 1 Pack Sound you can feel Love your new Bose Soundbar 700 but want to kick the performance up a notch? Add the Bose Bass Module 700 it's the difference between hearing bass and feeling thunder. Designed exclusively for the Bose Soundbar 700, it's the best wireless bass module we've ever designed for any of our home theater systems. In fact, it's the best performance you can get for a subwoofer this size.