Soundsing Audio Manufacturing Co.,Ltd is one of the leading China 18" coaxial speaker manufacturers and suppliers, providing with 18" full range raw speaker wholesale, welcome to import high quality products from our factory. SD-180031A , a 18” ferrite magnet coaxial speaker. It is 4”voice coil bass with 3” voice coil compression driver to afford high power. Inside with aluminum horn design has better mid high sound. Products specification   Size:18” Rated Power: 800W/100W Peak Power: 1600W200W Impedance:8 Ohm/8 Ohm DC Impedance: 5.6Ohm/5.6Ohm Sensitivity:98dB/104dB Frequency Response:30hz-1.8khz Voice Coil Diameter: 4 Inch/3 Inch Voice Coil Wire Material: Copper/CCAR Bobbin Material: TIL/Kapton Voice Coil Layers: 2 layer/1 Layer Dampers: conex Cone: paper Magnet Size:123 OZ+58.7OZ Mounting Detail: Outer diameter:461mm/18” Hole Cut Out diameter:421mm/16.57” Depth:263mm/10.35” Packing Information: 1 speaker one carton, brown inner and outer box Carton Size:49.5*49.5*30CM 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