Features Wide Frequency Response - Covering a broad frequency range from deep lows to clear mid-bass, our subwoofers ensure you don t miss a single note.foam Edge 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 8 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.Subwoofer Specification:Speaker type - Woofer Woofer Size - 8 InchPMPO Power - 1000WRMS Power - 100WImpedance - 4 OhmFoam Edge ConeVoice Coil - 1 InchVoice Coil Material - CCAWMagnet Size - 13 OzSensitivity - 86dBNo. Of Magnet - 2Package Includes:1x Woofer