Product Name : JW1275007R Product Description : Professional Audio Speaker, Usage For Woofer Price of product ( USD price or FOB price) : 1USD---88USD Product origin : Guangzhou P.R China Key Specifications : frame diameter : Diameter 315mm (12 in) Nominal impedance : 8 VOICE COIL DC resistance : 5.3 Nominal power handling :300W Continuous power handling : 300W Sensitivity (SPL1W/1m) : 94+/-2 dB Frequency range : F0~3 kHz Voice coil diameter :75mm (3 in) Winding material : COPPER Diaphragm material : PAPER Magnet material : Ferrite Special Features : Fms: 45.5Hz nref :1.87 % Res : 54.8 bl: 17.2N/A Re: 5.4 spl: 94.7dB Qms: 1.93 vas: 72.3L Qse:0.35 RP: 28.0 Qts : 0.30 LP : 53.4mH Rms : 9.9kg/s cp: 332.5 F Cms:0.18mm/N le : 0.70mH mms : 67.0gr sd:530.9c? Minimum Order Size and Packgaing details : Packing : Carton, for Trial Order MOQ : 20pcs