Model Active Subwoofer Box Diameter 25 cm / 10″ Amplifier Power (RMS/max.) 130 / 260 Watts (Class A/B) Impedance 4 Ohms Net Volume 26 L / 0.92 cu.ft. Subwoofer GZIW 25 Dimensions (B x H x T1/T2) 440 x 320 x 360/285 mm / 17.32″ x 12.60″ x 14.17″/11.22″