Fostex FF85WK, FF-WK-Serie, Breitbandlautsprecher, 80mm, 3", 8 Ohm
Die neue FF-WK-Serie löst die FF-Serie mit Kenaf-Membran ab. Komplett überarbeitet bietet die Serie eine Reihe neuer Technologien wie eine doppelschichtige Papiermembran (Kenaf/Holzfaser), eine versteifte Staubschutz-Kalotte aus Aluminium und eine neu entwickelte Aufhängung.
Features und technische Daten
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Size: 80mm/3.2”
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Overall diameter: 83mm/3.3”
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Baffle hole diameter: 73mm/2.9”
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Depth: 46.7mm/2.0”
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Voice coil diameter: 16mm/0.7”
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Cast/Stamped: Stamped
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Impedance: 8Ω
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Reproduction frequency response: fs ~ 28kHz
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Sound pressure level: 86.5dB/W(m)
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Rated input: 5W
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Music power: 15W
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Magnet weight: 187g/0.412lb
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Net weight: 450g/0.992lb
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Equivalent diaphragm radius a: 30mm
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Effective cone diameter D: 60mm
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Surface area of cone Sd: 0.0028m2
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Nominal impedance Zn: 8Ω
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Resonance frequency Fs: 115Hz
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DC resistance Re: 7,2Ω
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Coil inductance Le: 0.032mH
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Mechanical Q Qms: 3.298
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Electromagnetic Q Qes: 0.683
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Total Q Qts: 0.55
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Equivalent mass Mms: 2g
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BL product (Factor force) BL: 3.93Tesla/m
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Compliance equivalent volume Vas: 1.036L
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Voice coil overhang Xmax: 0.35mm
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Reference efficiency n0 Eff/n0: 0.246%
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Mechanical compliance of suspension Cms: 0.909m/N
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Efficiency bandwidth product EBP: 168.375
