15 Inch PRO Midrange Loud Speaker PA Speaker for Professional Audio System

15 inch pro midrange loud speaker PA speaker for professional audio system  General SpecificationsNominal Diameter380/15mm/inchRated Impedance5.6ohmNominal Power handling400WattsProgram Power800WattsSensitivity(lw/lm)97.5dBFrequency Range43.4-4KHzMinimum Impedance(Zmin)5.6ohmVoice Coil Diameter75mm/inchVoice Coil MaterialCopper Number of layers2 Magnet gap depth8mmSurround ShapeM-roll BasketCast Aluminium Magnet190 Mounting InformationOverall Diameter395mmBolt Circle Diameter378mmBaffle Cutout Diameter362mmOverall Depth155mmNet Weight7.1kgShipping weight7.8kgShipping Box400*400*180mmThiele-Small ParametersResonance frequencyFs43.4HzDC resistanceRe5.6ohmMechanical factorQms9.67 Electrical factorQes0.49 Total factorQts0.46 Mechanical complianceCms0.16mm/NMechanical resistanceRms2.4mech-ohmof suspension lossesEffective Moving MassMms84.1grHalf-space efficiencyEff2.82%BL FactorBL16.3T.mEquivalent Cas air loadVas173.9litersVoice-coil inductanceLelK1mHINTRODUCTIONHengda Audio is a professinal speaker manufacturer with experience in the PA speaker field for 10years. We make  different tranducers, compression drivers and tweeters. 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