Seismic Audio - 15" Raw Subwoofer/Woofer/Speaker - PA DJ - Replacement Model #: Seismic Audio - Quake 15 Sub Type: 15" Woofer/Speaker. Power RMS: 500 Watts. Power Peak: 1000 Watts Frequency Response: 30-2.5K Hz. Sensitivity: 90 db. Magnet: 70 oz. Voice Coil: 3" Impedance: 8 Ohm. Pressed Steel Chassis. Paper cone This speaker is brand new. One year warranty.