JBL ES250PWCH. Subwoofer type: Active, Subwoofer RMS power: 400 W, Subwoofer frequency range: 25 - 150 Hz. Power source type: AC, Input voltage: 120 V, Input frequency: 60 Hz. Colour of product: Cherry. Subwoofer width: 400 mm, Subwoofer depth: 428 mm, Subwoofer height: 502 mm