Mask, Face Mask, Medical Equipment manufacturer / supplier in China, offering Coronavirus Resist 3-Ply Nonwoven Disposable Face Mask Medical Grade Surgical Mask Face, Surgical Face Mask, Disposable, 3-Ply, Non-Woven with Polypropylene Ce, Kn95 Face Mask Ffp2 Mask with FDA Certificate & Ce Certificate and so on.
Min. Order / Reference FOB Price | |
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1000 Pieces | US $10.00/ Pieces |
Local Area: | Xian, Shaanxi, China |
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R&D Capacity: | OEM, ODM, Other |
Payment Terms: | LC, T/T, PayPal |
Type: | Siren |
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Speaker Design: | Tweeter |
Material: | Aluminum |
General SpecificationsNominal Diameter300/12mm/inchRated Impedance8ohmNominal Power handling300WattsProgram Power600WattsSensitivity(lw/lm)95.5dBFrequency Range50-2kHzMinimum Impedance(Zmin)6.67ohmVoice Coil Diameter64/2.5mm/inchVoice Coil MaterialCopper Voice Coil Winding Depth16mmNumber of layers2(inside/outside) Magnet gap depth8mmSurround ShapeM-roll BasketCast Aluminum Flux Density1.1TMagnet Material/MassCeramic
Thiele-Small parametersResonance frequencyFs50HzDC resistanceRe5.8ohmMechanical factorQms9.1 Electrical factorQes0.42 Total factorQts0.40 Mechanical complianceCms0.16mm/NMechanical resistance
of suspension lossesRms2.45mech-ohmEffective Moving MassMms60grHalf-space efficiencyEff2.03%BL FactorBL16.2T.mEquivalent Cas air loadVas68.9litersEffective piston areaSd0.0552m2Max.linear excursionXmax6mmVoice-coil inductanceLelK1.02mH
Mounting InformationOverall Diameter315mmBolt Circle Diameter295mmBolt Hole Diameter6.5mmBaffle Cutout Diameter282mmOverall Depth139mmNet Weight5.2kg