Seismic Audio - 15" Raw Woofer/Speaker/Pro Audio - PA DJ 400 Watts each Replacement Driver Model #: Seismic Audio - Earth Shaker 15 Type: 15" Woofer/Speaker. Power RMS: 400 Watts. Power Peak: 800 Watts Frequency Response: 40-5K Hz. Sensitivity: 97 db. Magnet: 80 oz. Voice Coil: 3" Impedance: 8 Ohm. Die Cast Aluminum Chassis. Paper cone This speaker is brand new. One year warranty.