China M04 4007c-4 Inch Karaoke Speaker Parlante Profesionale

Introduction:

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.

Speaker's Details:

General SpecificationsNominal Diameter100/4mm/inchRated Impedance4ohmNominal Power handling30WattsProgram Power60WattsSensitivity(lw/lm)86dBFrequency Range103-12kHzMinimum Impedance(Zmin)3.9ohmVoice Coil Diameter25/1mm/inchVoice Coil MaterialCopper Voice Coil Winding Depth6.8mmNumber of layers2 Magnet gap depth4mmCone ShapeCurved Surround ShapeFoam BasketPressed Steel Magnet Material/MassCeramic/0.27kg

Thiele-Small parametersResonance frequencyFs103HzDC resistanceRe3.6ohmMechanical factorQms3.31 Electrical factorQes0.86 Total factorQts0.68 Mechanical complianceCms0.45mm/NMechanical resistance
of suspension lossesRms1.03mech-ohmEffective Moving MassMms5.24grHalf-space efficiencyEff0.24%BL FactorBL3.78T.mEquivalent Cas air loadVas1.95litersEffective piston areaSd0.0055m2Max.linear excursionXmax2.5mmVoice-coil inductanceLelK0.17mH

Mounting InformationOverall Diameter113mmBolt Circle Diameter104.3mmBolt Hole Diameter4.3mmBaffle Cutout Diameter92.5mmOverall Depth61.5mmNet Weight0.68kg