GENERAL Size 10? Design 10? Component Subwoofer Woofer Composition Injected Molded Polypropylene? Woofer Surround Trex Plane Woofer Magnet Composition Ferrite Warranty (must be purchased from an Authorized Pioneer Dealer) 1 Year MARINE Water Resistant IPX7 UV Resistant ASTM D4329 Grille Style Black and White Sports Grilles Included INSTALLATION SPECIFICATION Max. Music Power (Nominal) 300W RMS / 900 W PEAK Frequency Response 20 Hz to 3.5 kHz Sensitivity (1W/1 m) 84 dB Impedance 4 Ohms Mounting Depth 5? (126mm) Cut-Out Dimensions 8-7/8? Dia. (í225mm) Free Air Operation