SpecificationsApplicationLow-MiddlePharmaceutical Equipment & Machinery Nominal Diameter :mm300(12'')Nominal Impedance :Ohm8RMS Power Input :W300MAX Power Input :W600Sensitivity (1W/1M) :dB95Frequency Range :Hz52-2.8KVoice Coil DiameCable Tools ter :mm75(3'')Voice Coil Winding Material :CopperVoice Coil Former Material :KaptonVoice Coil Winding Depth :mm17Magnetic Gap Depth :mm8Surround Material :PolycottonSurround Design :M-rollBasket :AluminumMagnet :Φ190Ferrite RingThiele & Small ParametersResonance Frequency :FsHz52DC Resistance :ReOhm5.5Mechanical Q Factor :Qms11.2Electrical Q Factor :Qes0.4Total Quality Factor :Qts0.4Equivalent Volume :VasL59.7Effective Moving Mass :Mmsg63.5Mechanical Compliance :Cmsμm/N149.2BL Factor :BLT.m16.2Effective Piston Area :Sdcm²530.9η(Eta Zero) :η01.80%Max.Linear Excursion :Xmaxmm±4Mounting InformationOverall Diameter :mm315Mounting Holes Diameter :mm297Bolt Circle Diameter :mm8xΦ7Baffle Cut-Out Diameter :mm280Overall Depth :mm135Net Weight :kg5.36Shipping Weight :kg5.76Shipping Box(Single) :cm32*32*15Shipping Weight (2 Unit) :kg12.5Shipping Box (2 Unit) :cm34*34*36