Soundsing Audio Manufacturing Co.,Ltd is one of the leading China 15" bass speakers manufacturers and suppliers, providing with 15"subwoofer wholesale, welcome to import high quality products from our factory. SD15X400 is a 15” bass speaker. All materials are chose very carefully by engineer to have ideal sound quality. Thick front plate and back plate, inside outside VC,  thick paper cone, high quality magnet, these are the factors to make this speaker powerful, very thick bass and clear midrange. Products specification   Size:15” Rated Power: 800W Peak Power:1600W Impedance:8 Ohm DC Impedance: 5Ohm Sensitivity:96.5dB Frequency Response:30hz-1.5khz Voice Coil Diameter: 4 Inch Voice Coil Wire Material: Copper Bobbin Material: Fiber Glass Voice Coil Layers: inside and outside Dampers: dual Cone: paper Magnet Size: 123OZ Mounting Detail: Outer diameter:393mm/15” Hole Cut Out diameter:363mm/14.29” Depth:172mm/6.77” Packing Information: 1 speaker one carton, two brown inner boxes packed into one brown outer box Carton Size: 2.5*42.5*40.5CM 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