This Package Includes the Following Items:1 x Kicker L7S12 Car Audio Solo-Baric 12 Subwoofer Square L7 Dual 4 Ohm Sub 44L7S1241 x Kicker 46CXA8001 Car Audio Class D Amp Mono 1600W Peak Sub Amplifier CXA800.1Kicker L7S12 Car Audio Solo-Baric 12 Subwoofer Square L7 Dual 4 Ohm Sub 44L7S124:This item is Factory Certified RefurbishedFeatures:Injection-Molded Polypropylene ConePatented Corner Ribs Minimize DistortionSoloKon 360-Degree Back BracingRibbed Santoprene Surround With Blue Surround StitchingUniPlate Black Plate And Pole Piece, Plus Perimeter Venting For Excellent Thermal ManagementThick Tinsel LeadsLarge Ceramic MagnetCast Aluminum BasketSatin-Nickel Plated, Spring-Loaded Speaker TerminalsSpecifications:Power Handling750 Watts RMS1500 Watts PeakImpedance: Dual 4 OhmSensitivity: 88.6 dBFrequency Response: 20-100 HzMounting Depth: 6-11/16"Mounting Cutout: 11-1/16"Sub Box Recommendations:Minimum Sealed: 0.88 Cubic FeetMaximum Sealed: 2.0 Cubic FeetMinimum Vented: 1.75 Cubic FeetMaximum Sealed: 3.25 Cubic Feet