Roku Wireless Subwoofer expands the premium audio of Roku Smart Soundbar with even deeper, richer bass. Bring movies to life with powerful bass and thunderous response at any volume for a theater-like experience and enjoy deep, resonant lows for music you can feel. Setup is simple, just plug it in and pair it to Roku Smart Soundbar. 10in-¥ driver, 250W peak power, 125W RMS. 40 to 200 Hz. 102 dB. Dual-band 802.11ac (2.4GHz/5.0GHz). Measures 11.8in-¥ x 11.8in-¥ x 11.8in-¥.