The JBL Studio SUB 250P fills any room with serious bass. This subwoofer has a 250mm driver that is controlled by a built-in amplifier of 200 watts. Put on a movie or a song and listen to a rich and dynamic bass sound. If you want to hear and feel the bass, activate the Bass Boost function. This produces even more powerful low frequencies. To create a surround sound, combine the subwoofer with the Studio column, bookshelf speakers, and the center speaker.