Product Name : JW1575013 Product Description : Professional Audio Speaker, Usage For Woofer Price of product ( USD price or FOB price) : 1USD---98USD Product origin : Guangzhou P.R China Key Specifications : frame diameter : Diameter 390mm (15 in) Nominal impedance : 8 VOICE COIL DC resistance : 4.6O/300HZ Nominal power handling : 500W Continuous power handling : 800W Sensitivity (SPL1W/1m) : 101+/-2 dB Frequency range : F0~2 kHz Voice coil diameter : 75mm (3 in) Winding material : COPPER Diaphragm material : PAPER Magnet material : Ferrite Special Features : Fms: 46.9Hz nref:1.65% Res: 57.7 bl: 17.7N/A Re: 5.4 spl: 94.2dB Qms: 13.06 vas: 103.1L Qse:0.62 RP: 47.2 Qts: 0.59 LP: 31.0mH Rms:2.7kg/s cp: 478.1 F Cms:0.09mm/N le: 0.70mH mms:121.7gr sd:881.4c? Minimum Order Size and Packgaing details : Packing:carton;for trial order MOQ:20pcs;