DriverDynamic PowerOutput PowerFrequency ResponseAdvanced YSTTwisted Flare PortDimensions (W x H x D)Weight NS-SW050 Subwoofer Driver20 cm (8”) cone Dynamic Power100 W (5 ohms) Output Power50 W (100 Hz, 5 ohms, 10% THD) Frequency Response28–200 Hz Advanced YSTYes Twisted Flare PortYes Dimensions (W x H x D)291 x 292 x 341 mm 11-1/2” x 11-1/2” x 13-3/8” Weight8.5 kg 18.7 lbs..