Product Name : JW1575009 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 : frame diameter: Nominal impedance : 8 VOICE COIL DC resistance : 5.6/300HZ Nominal power handling : 450W Continuous power handling : 450W Sensitivity (SPL1W/1m) : 96+/-2 dB Frequency range : Frequency range: Voice coil diameter : 75mm (3 in) Winding material : aluminium Diaphragm material : PAPER Magnet material : Ferrite Special Features : Fms : 50.6Hz nref : 3.72 % Res: 50.2 bl: 16.5N/A Re: 5.4 spl: 97.7dB Qms : 3.37 vas : 138.0L Qse : 0.46 RP : 27.5 Qts : 0.41 LP: 45.6mH Rms:6.9kg/s Rms:6.9kg/s Cms:0.13mm/N le: 0.85mH mms : 73.3gr sd:855.3c? Minimum Order Size and Packgaing details : Packing : carton ; for trial order MOQ : 20pcs