Guangzhou Hengda Audio Equipment Co., Ltd.  

Product Name: PRO Audio System 18 Inch PA Speaker Professional Audio Speaker Subwoofer Model NO.: HDW-1808 THD: <0.005% Application: Commercial Speaker Material: metal Speaker System: Optional Combination Operation Mode: Wire / Remote Control Activity: Passive Hi-Fi: Not Hi-Fi Noise: <95dB Magnet Material: Ferrite Voice Coil Diameter: 100/4 mm/Inch Sensitivity: 99 dB Frequency Range: 41-1.5K Hz Basket: Cast Aluminium Trademark: OEM and ODM are both welcome. Transport Package: by Export Carton or as Your Requirement Specification: 18 inch subwoofer Origin: Guangzhou, China HS Code: 851829000 Product Description PRO Audio System 18 Inch PA Speaker Professional Audio Speaker SubwooferGeneral SpecificationsNominal Diameter18mm/inchRated Impedance8ohmNominal Power handling650WattsProgram Power1300WattsSensitivity(lw/lm)99dBFrequency Range40.8-1.5KHzMinimum Impedance(Zmin)5.6ohmVoice Coil Diameter100/4mm/inchVoice Coil MaterialCooperNumber of layers2Magnet gap depth12mmSurround ShapeW-rollBasketCast AluminiumMagnet220 FerriteMounting InformationOverall Diameter468mmBolt Circle Diameter445mmBaffle Cutout Diameter424mmOverall Depth212mmNet Weight12.9kgShipping weight14.1kgShipping Box490*490*250mmThiele-Small ParametersResonance frequencyFs40.8HzDC resistanceRe5.6ohmMechanical factorQms5.93Electrical factorQes0.56Total factorQts0.51Mechanical complianceCms0.09mm/NMechanical resistanceRms7.2mech-ohmof suspension lossesEffective Moving MassMms167.5grHalf-space efficiencyEff2.13%BL FactorBL20.7T.mEquivalent Cas air loadVas181.8litersVoice-coil inductanceLelK37mH