Technical Specifications - Bowers & Wilkins 685 Owner's Manual

Technical features
Frequency range
Frequency response
Harmonic distortion
Nominal impedance
Crossover frequency
Recommended amplifier power
Max. recommended cable impedance
685
Nautilus
Kevlar ®
Flowport
Description 2-way vented-box system
Drive units 1x ø25mm (1 in) aluminium dome high-frequency
1x ø165mm (6.5 in) woven Kevlar
-6dB at 42Hz and 50kHz
49Hz - 22kHz ±3dB on reference axis
Dispersion Within 2dB of reference response
Horizontal: over 60° arc
Vertical:
Sensitivity 88dB spl (2.83V, 1m)
2nd and 3rd harmonics (90dB, 1m)
<1% 110Hz - 22kHz
<0.5% 150Hz - 20kHz
8Ω (minimum 3.7Ω)
4kHz
30W - 100W into 8Ω on unclipped programme
0.1Ω
Dimensions Height: 340mm (13.4 in) (not including feet)
Width:
Depth:
Net weight 7.0kg (15.4 lb)
™ tube-loaded aluminium dome tweeter
brand fibre cone bass/midrange
™
over 10° arc
198mm (7.8 in)
331mm (12.3 in) (including grille and terminals)
® cone bass/midrange
43