American Bass XFL1544 15" Dual 4 Ohm Competition Car Stereo Subwoofer 1000 WATTS RMS/2000 WATTS MAX. 8.46 " MOUNTING DEPTH CARBON-KEVLAR ENFORCED NONPRESS PAPER CONE DIE CAST ALUMINUM BASKET NT MULITLAYER HIGH DENSITY FOAM SURROUND DUAL 4 OHM 3" VOICE COILS MULTI PIECES OF NEW COMEX SPIDERS TRIPLE STACKED 220 OZ. MAGNETS UNI-RUBBER GASKET AND RUBBER MAGNET BOOT COOLING PUMP MOTOR DESIGN