- High density magnet, strong voice performance, the use of aerospace magnets, power full.- High power output, suitable for a variety of musical styles, popular, classical,jazz, country, rock,it can be very good control.Specifications:Max music power:1000WNominal power : 180WSize:163mm X 237mm rubber edge injection molding bassImpedance:4 OHMSSensitivity:93dB/W(1m)Frequency response:25-30,000HzReproduction system : 3 wayPackage Weight : 2420 G / 85.36 OuncesRetail Packaging: Yes, Colored BoxPackage includes 2 pack 6 x 9 inch coaxial speakers 2pack soundproof enclosures2 pack Connection line