B &W Bowers & Wilkins

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685 Specifications
Back Print
Woven Kevlar
Crossover Tuning
Nautilus Tapering Tube
Flowport
Mushrooms
FST
Tweeter on Top
Matrix
Rohacell
Diamond Tweeters
Sphere / Tube Enclosure
De-Coupling
Nautilus
Technical featuresNautilus™ tube loaded aluminium dome tweeter
Kevlar® brand fibre cone bass/midrange
Flowport™
Description2-way vented-box system
Drive units1x ø25mm (1 in) aluminium dome high-frequency
1x ø165mm (6.5 in) woven Kevlar® cone bass / midrange
Frequency range-6dB at 42Hz and 50kHz
Frequency response49Hz - 22kHz ±3dB on reference axis
DispersionWithin 2dB of reference response
Horizontal: over 60º arc
Vertical: over 10º arc
Sensitivity88dB spl (2.83V, 1m)
Harmonic distortion2nd and 3rd harmonics (90dB, 1m)
<1% 100Hz - 22kHz
<0.5% 150Hz - 20kHz
Nominal impedance8Ω (minimum 3.7Ω)
Crossover frequency4kHz
Crossover filters1st Order – tweeter
1st Order – bass/midrange
Recommended amplifier power25W - 100W into 8Ω on unclipped programme
Max. recommended cable impedance0.1Ω
DimensionsHeight: 340mm (13.4 in)
Width: 198mm (7.8 in)
Depth: 331mm (12.3 in)
Net weight7.0kg (15.4 lb)
FinishesBlack Ash Vinyl
Light Oak Vinyl (not available in US/Canada)
Red Cherry Vinyl
Wengé Vinyl
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