Soundsing Audio Manufacturing Co.,Ltd is one of the leading China 18" pro audio driver manufacturers and suppliers, 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