American Bass Usa XFL 1244 2000W Max dual 4 12" Subwoofer 1000-watt(1000W) RMS/2000-watt(2000W) Max. 7.6 " mounting depth Dual 4 ohm 3" voice coils DIE CAST ALUMINUM BASKET CARBON-KEVLAR ENFORCED NONPRESS PAPER CONE NT MULITLAYER HIGH DENSITY FOAM SURROUND TRIPLE STACKED 220 oz. MAGNETS Multi pieces of new comex spiders cooling pump motor design uni-rubber gasket and rubber magnet boot