15 Inch Full Range Neodymium China Audio Water Proof Speakers

15 inch Full Range Neodymium China Audio Water Proof Speaker  General SpecificationsNominal Diameter380/15mm/inchRated Impedance8ohmNominal Power handling500WattsProgram Power1000WattsSensitivity(lw/lm)100dBFrequency Range58.5-4.2KHzMinimum Impedance(Zmin)5.6ohmVoice Coil Diameter3/ 75mm/inchVoice Coil MaterialCopper Number of layers2 Magnet gap depth10mmSurround ShapeM-roll BasketCast Aluminium MagnetNeodymium Mounting InformationOverall Diameter392mmBolt Circle Diameter372mmBaffle Cutout Diameter360mmOverall Depth172mmNet Weight4.4kgShipping weight5kgShipping Box400*400*185mmThiele-Small ParametersResonance frequencyFs58.5HzDC resistanceRe5.6ohmMechanical factorQms5.71 Electrical factorQes0.8 Total factorQts0.7 Mechanical complianceCms0.08mm/NMechanical resistanceRms6.3mech-ohmof suspension lossesEffective Moving MassMms98grHalf-space efficiencyEff1.99%BL FactorBL15.9T.mEquivalent Cas air loadVas82.2litersVoice-coil inductanceLelK0.5mHINTRODUCTIONHengda Audio is a professinal speaker manufacturer with experience in the PA speaker field for 10years. We make  different tranducers, compression drivers. We not only provide goods but technology. OEM and ODM are both welcome.  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1