DS18  PRO-BX15 Technologically Advanced 15-Inch 2500 Watts Subwoofer 2500 Watts Max Power and 1400 Watts RMS Power Black Color Aluminum Basket with Cloth Edge and Paper with Glass Fiber Cone 125 Oz High-Strength Ferrite Magnet and ConeX Spider and 4" Black Aluminum Voice Coil 8-Ohms Impedance and 96dB Sensitivity 35-1500Hz Frequency Response