18 Inch Neodymium Professional Sound Audio Subwoofer Woofer Speaker

18 Inch Neodymium Professional Sound  Audio Subwoofer  Woofer SpeakerProduct main features:- 18 inch PA speaker- Ideal for subwoofer-1000W RMS,101dB- 5 inch voice coil, Neodymium magnet   - Subwoofer is ideal for high quality professional bass reflex and bass horn systemsGeneral Specifications  Nominal Diameter460/18mm/inchRated Impedance8ohmNominal Power handling1000WattsProgram Power2000WattsSensitivity(lw/lm)101dBFrequency Range40.5-1.6KHzMinimum Impedance(Zmin)5.6ohmVoice Coil Diameter125/5mm/inchVoice Coil Materialcopper Number of layers2(inside/outside) Magnet gap depth14mmSurround ShapeW-roll BasketCast Aluminum MagnetNeodymium Mounting Information  Overall Diameter466mmBolt Circle Diameter445mmBaffle Cutout Diameter422mmOverall Depth211mmNet Weight11.9kgShipping weight13.7kgShipping Box490*490*260mmThiele-Small ParametersResonance frequencyFS40.5HzDC resistanceRe5.6ohmMechanical factorQms8.98 Electrical factorQes0.86 Total factorQts0.79 Mechanical complianceCms0.06mm/NMechanical resistanceRms7.5mech-ohmof suspension lossesEffective Moving MassMms266.4grHalf-space efficiencyEff0.95%BL FactorBL21T.mEquivalent Cas air loadVas128litersVoice-coil inductanceLelk1mH/* 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