Product Details:8" Apocalypse Series Mid-range Car SpeakersPower Handling:Peak: 600 watts per pairRMS: 300 watts per pairPaper cone materialCloth speaker surroundStamped Steel Frame2" Voice coilFerrite magnet motor structureTop-mount Depth: 3.5"Cutout Dimensions: 8.2"Impedance: 4 ohmsFrequency Response: 110 - 10,000 HzSensitivity: 97 dBAuthorized Internet Dealer1-year Manufacturer's Warranty