Seismic Audio - 18" Raw Subwoofers/Woofers/Speakers - PA DJ Pro Audio Replacement Sub - 750 Watts RMS - 240 oz Magnet - 8 Ohms - 4" Voice Coil Model #: New Madrid 18 Type: 18" Woofer/Speaker. Power RMS: 750 Watts. Power Peak: 1500 Watts Frequency Response: 25-2K Hz. Sensitivity: 102 db. Magnet: 240 oz. Voice Coil: 4" Impedance: 8 Ohm. Die Cast Aluminum Chassis. Paper cone. Cloth Edge This woofer is brand new. One year warranty