Buy from Amazon : br br BOSS Audio P156DVC Phantom 15-inch 2500-watt DUAL Voice Coil Subwoofer br br 15-inch subwoofer with 2000 watts maximum power handling Poly Injection Cone br This item is non returnable br Dual 4 ohm voice coils for wiring versatility br Frequency Response 25Hz - 1kHz br Mounting Depth 7-34 inches br Subwoofer Size 15