High Power Blue Paper Cone Woofer Bumped Yoke Plate for Extended Excursion Specially Treated Black Rubber Edge Suspension Vented Motor Structure 1 High Temperature Aluminum Voice Coil Heavy Magnet Structure Impedance: 4 Ohm 125 Watts RMS/250 Watts Peak Overall Diameter: 6.42 SPL @ 1W/1M: 96dB Magnet Weight: 40 oz. Mounting Depth: 2.64