Check the listing for details. Blastking PROFILE18 18" 3000 Watts High Output Woofer. Condition: New. Listed at 299.99 USD. Sold Individually The BlastKing Profile series brings high output, low frequency woofers in 12”, 15”, 18” and 21” options. These transducers are capable of very low frequencies and are intended for use in a reflex or horn loaded cabinets. They are all made in a high-quality die cast aluminum frame and boast a heavy-duty ferrite magnet that allows for increased power ratings. The Profile transducers are perfect for those needing high level, low frequency output transducers with very low distortion. Features 4.5” Voice Coil 3000 Watts Program Power 97.4 dB sensitivity 38 Hz - 1500 Hz frequency response Forced air ventilation View PROFILE18 Datasheet General Specifications Basket Diameter: 457/18 mm/inch Rated Impedance: 8 ohm 1500 Watts Rated Power Handling3000 Watts Program Power Sensitivity: 97.4 dB Frequency Range: 38-1500 Hz Magnet Weight: 150 Oz Magnet Composition: Ferrite Magnet Voice Coil Diameter: 115/4.5 mm/inch Basket Materials: Aluminum Shipping Information Net Weight: 17.3/38.1 Kg/Lbs