Soundsing Audio Manufacturing Co.,Ltd is one of the leading China 1.75\" horn driver manufacturers and suppliers,Website: , providing with 1.75\" horn driver wholesale, welcome to import high quality products from our factory. SD-1089A is a 1.75” horn driver with polyimide diaphragm. We use thick washer and t-yoke, high grade ferrite magnet, aluminum cover to get high sensitivity high frequency. It is suitable for 12” ,15” cabinets. We have more models like plastic cover, aluminum cover , screw on , bolt on and so on. Products specification Rated Power: 40W Peak Power:80W Impedance:8 Ohm DC Impedance: 5.6Ohm Sensitivity:103dB Frequency Response:1.2khz-20khz Voice Coil Diameter: 1.75 Inch Voice Coil Wire Material: CCAR Bobbin Material: Kapton Voice Coil Layers: 1 layer Diaphragm: Polyimide Throat (Exit)Diameter: 1 Inch Magnet Size: 40OZ Mounting Detail: Outer diameter: 120mm/4.72” Depth:61mm/2.4” Mounting hole: φ76*3*M6 /φ56*2*M6 Packing Information: 1pc one carton, 8pcs one outer box Carton Size: 27.5*28*21CM 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