The latest amplifier technology and acoustical components have been used to ensure the most accurate sound reproduction possible. Robust drivers, a rock-solid cabinet, and carefully designed ports guarantee a tight, articulate, and distortion-free low frequency reproduction, even at high replay levels. Using the sum output, Plane Wave Bass Arrayâ„¢ (PWBAâ„¢) techniques acoustically improves lateral consistency in the listening area. The bass extends down to 18 Hz.