Yamaha YST-SW030. Subwoofer type: Active, Subwoofer RMS power: 130 W, Subwoofer frequency range: 28 - 200 Hz. Power source type: AC, Input voltage: 100 - 240 V, Input frequency: 50/60 Hz. Colour of product: Black, White. Subwoofer width: 290 mm, Subwoofer depth: 311 mm, Subwoofer height: 360 mm