Soundsing Audio Manufacturing Co.,Ltd is one of the leading China 18" pro audio driver manufacturers and suppliers,Website:://.soundsingpro.com, providing with audio speaker driver wholesale, welcome to import high quality products from our factory. SD-180019A , 18” pro audio driver with dual magnets. It is suggested to use in subwoofer cabinets. Products specification Size:18” Rated Power: 800W Peak Power: 1600W Impedance:8 Ohm DC Impedance: 4.8Ohm Sensitivity:98dB Frequency Response:30hz-1khz Voice Coil Diameter: 4 Inch Voice Coil Wire Material: Copper Bobbin Material: TIL Voice Coil Layers: 2 layer Dampers: dual Cone: woolen paper Magnet Size:196.6 OZ Mounting Detail: Outer diameter:471mm/18” Hole Cut Out diameter:423m/16.65” Depth:215mm/8.46” Packing Information: 1 speaker one carton, brown inner and outer box Carton Size: 49.5*49.5*28.5CM Other Information Place of Original: Guangzhou, China Payment Terms: T/T, Western Union, Money Gram Port of Delivery: Huangpu, Guangzhou, China Production Lead Time:30days after receive 30% T/T