350 Watts Peak Power 175 Watts RMS 4-Ohm Voice Coil Sensitivity: 88.1 dB Frequency Response: 30Hz - 500Hz Injection-Molded Polypropylene Cone Co-molded Santoprene Surround UniPlate Back Plate And Pole Piece Thick Tinsel Leads Large Ceramic Magnet Rear Gasketing Included Polymer Basket Resists Corrosion Protective Terminal Cap Stainless Mounting Hardware Included