About Pyramid WX125X 12-Inch 450 Watt Subwoofer:
High Power Blue Paper Cone WooferBumped Yoke Plate for Extended Excursion Specially Treated Black Rubber Edge Suspension Vented Motor Structure 1.5-Inch High Temperature Aluminum Voice Coil Heavy Magnet StructureImpedance: 4 Ohm 225 Watts RMS/450 Watts Peak Overall Diameter: 11.93-Inch SPL @ 1W/1M: 98dB Magnet Weight: 80 oz. Mounting Depth: 4.80-Inch