L18/6620-Nice Performance 18 Inch PRO Sound Loud Speakers Subwoofer Parlante

L18/6620-Nice Performance 18 Inch Pro Sound Loud Speakers Subwoofer ParlanteProduct main features:-  Impact subwoofer- 4"voice coil, 220mm magnet- 650Watt, 97.5dB- Yearly sales: 3000 PCS-Terrific PRO audio subwoofer of compass bass relexIntroduction:We are a PA speaker factory of more than 13 years in Panyu,Guangzhou,China,occupying 2000 square meters with 3 production lines.We make Pro audio speakers from small sizes upto 24 inch.R&D Capability:In the R&D, Hipower's experienced engineers and technicians carry out researches on new materials.state-of-art components and advacned product designs with the help of an anechoic chamber,test instruments and simulation sofwares.Markets:Ever since 2003, we have been exporting to many countries, including southeast Asia, Europe, North Ameria and South America.Details:Nominal Diameter460/18mm/inchRated Impedance6ohmNominal Power handling650WattsProgram Power1300WattsSensitivity(lw/lm)97.5dBFrequency Range32-2.2KHzMinimum Impedance(Zmin)5.8ohmVoice Coil Diameter100/4mm/inchVoice Coil Materialcopper Voice Coil Winding Depth23mmNumber of layers2 Magnet gap depth12mmCone ShapeCurved Surround ShapeM-roll BasketCast Aluminum Flux Density1.0TMagnet Material/MassCeramic/3.65kgMounting InformationOverall Diameter461mmBolt Circle Diameter439mmBolt Hole Diameter6.5mmBaffle Cutout Diameter424mmOverall Depth200mmNet Weight12.1kg  Thiele-Small parametersResonance frequencyFs32HzDC resistanceRe5.0ohmMechanical factorQms13.4 Electrical factorQes0.35 Total factorQts0.34 Mechanical complianceCms0.14mm/NMechanical resistanceof suspension lossesRms2.63mech-ohmEffective Moving MassMms174grHalf-space efficiencyEff2.7%BL FactorBL22.4T.mEquivalent Cas air loadVas292litersEffective piston areaSd0.1225m2Max.linear excursionXmax8mmVoice-coil inductanceLelK1.96mH/* 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