DS18  PRO-BLF15 PRO Series 15-Inch 2000 Watts Subwoofer 2000 Watts Max Power and 1200 Watts RMS Power Red Color Aluminum Basket with Cloth Edge and Paper with Glass Fiber Cone 80 Oz High-Strength Ferrite Magnet, 3" Black Aluminum 4-Layer Voice Coil, and 2-Layer Conex Spider 4+4-Ohms Impedance and 97dB of Sensitivity 30-800Hz Frequency Response