DriverOutput PowerFrequency ResponseAdvanced YSTHigh-Efficiency Power AmplifierTwisted Flare PortBASS (Bass Action Selector System)Auto StandbyStandby Power ConsumptionSystem ConnectorDimensions (W x H x D)Weight NS-SW300 Subwoofer Driver25 cm (10”) cone Output Power250 W Frequency Response20–160 Hz Advanced YSTYes High-Efficiency Power AmplifierYes Twisted Flare PortYes BASS (Bass Action Selector System)Yes Auto StandbyYes Standby Power Consumption0.3 W System ConnectorYes Dimensions (W x H x D)350 x 366 x 420 mm 13-3/4” x 14-3/8” x 16-1/2” Weight18 kg 39.7 lbs..