Product Name : JW1275013 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 : 5.4 Nominal power handling : 320W Continuous power handling : 400W Sensitivity (SPL1W/1m) : 100+/-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: 54.8Hz nref:1.80 % Res: 39.3 bl: 14.6N/A Re: 5.4 spl: 94.6dB Qms: 10.05 vas : 57.5L Qse:0.51 RP: 69.8 Qts: 0.48 LP: 34.1mH Rms:2.0kg/s cp: 332.0 F Cms:0.15mm/N le : 0.73mH mms : 57.9gr sd : 530.9c? Minimum Order Size and Packgaing details : Packing : carton, for trial order MOQ 20pcs