Product Name : JW1275008 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 : 5.6 Nominal power handling : 300W Continuous power handling : 300W Sensitivity (SPL1W/1m) : 94.3+/-2 dB Frequency range : F0~2.5 kHz Voice coil diameter : 75mm (3 in) Winding Material : Copper Diaphragm Material : Paper Magnet Material : Ferrite Special Features : Fms : 52.6Hz nref : 2.75 % Res : 38.3 bl: 14.4N/A Re : 5.4 spl :96.4dB Qms : 9.84 vas : 78.2L Qse :0.40 RP : 113.4 Qts : 0.38 LP : 48.6mH Rms : 1.6kg/s cp : 310.0 F Cms : 0.20mm/N le : 0.86mH mms : 46.2gr sd : 530.9c? Minimum Order Size and Packgaing details : Packing : carton;for trial order MOQ : 20 pcs