SPCEIFICATINONS Nomin diameter : 101.6mm. 4in Nomin al impe dance: 4 ohm Power rating: 40W RM S Sensitivity (1w/1m) : 90dB±3dB Frequency range: 145-17KHz Voice Coil diameter : φ25.5mm Voice coil length: 7.6mm Air gap height: 5mm magnet dimension : φ80mm*18mm
THIELE & SMALL PARAMETERS Resonace frequency,FS: 145Hz D.C.Resistan ce,Re: 3.4 ohm Mechanical quality factor,Qms: 3.19 Electrical quality factor,Qes: 0.84 Total quality factor,Qts: 0.66 Equivalent air volme to Cms,Vas: 1.9L Mechanical compliance,Cms: 0.31mm/N Mechanical resistance,Rms: 1.1kg/s Bl factor,Bl: 3.8N/A Effective surface area,Sd: 0.0066㎡
MATERIALS Basket: Steel Cone and dust can : Paper Surround: Treated cloth Voice coil wire: Copper Clad ALribbon Voice coil bobbin: Kapton Magnet: Ferrite
MOUNTING INFORMATION Overall diameter: 113.5*113.5mm Bolt circle diameter: φ119mm Baffle cutout diameter:φ104mm Depth: 64mm Net weight: 0.85kg
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