6 Inch Subwoofer FeaturesWIDE Frequency Response - Covering a broad frequency range from deep lows to clear mid-bass, our subwoofers ensure you don t miss a single note.pp Cone - Superior flexibility allows the replacement subwoofer cone to move freely and accurately, resulting in precise and responsive bass performance.superior Build - Steel frame Endures high power levels and extended use. Better heat dissipation and maintain top-notch sound quality over time.easy Installation - Standard 6 inch size, easy to install in a car door, speaker holes, under seat. Perfect for replacing bad speakers or upgrading from low powered Oem ones.Woofer Specification:Speaker Type : WooferSize: 6 inchesRMS : 30 WattsMax : 60 WattsPMPO : 300 WattsImpedance : 4 OhmMagnet Weight : 8 OzCone Material : PPSurround : High Roll FoamCooling System : Advanced Air FlowVoice Coil : 1 InchVoice Coil Material : CCAWFrame Material : SteelPackage Includes:4x Woofer