12 Inch Audio System Speaker Parts PA Jb Speaker Woofer

12 inch Audio System Speaker Parts  Pa   Speaker woofer  General SpecificationsNominal Diameter300/12mm/inchRated Impedance8ohmNominal Power handling300WattsProgram Power600WattsSensitivity(lw/lm)97dBFrequency Range48.3-2.4KHzMinimum Impedance(Zmin)5.6ohmVoice Coil Diameter75mm/inchVoice Coil Materialcopper Number of layers2 Magnet gap depth10mmSurround ShapeW-roll BasketCast Aluminium Magnet190 Mounting InformationOverall Diameter323mmBolt Circle Diameter304mmBaffle Cutout Diameter290mmOverall Depth153mmNet Weight7.05kgShipping weight7.6kgShipping Box320*320*165mmThiele-Small ParametersResonance frequencyFs78HzDC resistanceRe5.6ohmMechanical factorQms3.34 Electrical factorQes0.44 Total factorQts0.39 Mechanical complianceCms0.18mm/NMechanical resistanceRms5.3mech-ohmof suspension lossesEffective Moving MassMms59.9grHalf-space efficiencyEff1.76%BL FactorBL15.2T.mEquivalent Cas air loadVas71.5litersVoice-coil inductanceLelK0.7mHINTRODUCTIONHengda 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