Bowers & Wilkins 685 Owner's Manual page 47

Technical features
Frequency response
Harmonic distortion
Nominal impedance
Crossover frequency
Recommended amplifier power
Max. recommended cable impedance
44
686
Nautilus
Kevlar
Flowport
Description 2-way vented-box system
Drive units 1x ø25mm (1 in) aluminium dome high-frequency
1x ø130mm (5 in) woven Kevlar
Frequency range -6dB at 45Hz and 50kHz
55Hz - 22kHz ±3dB on reference axis
Dispersion Within 2dB of reference response
Horizontal: over 60° arc
Vertical:
Sensitivity 84dB spl (2.83V, 1m)
2nd and 3rd harmonics (90dB, 1m)
<1% 110Hz - 22kHz
<0.5% 150Hz - 20kHz
8Ω (minimum 5.1Ω)
4kHz
30W - 100W into 8Ω on unclipped programme
0.1Ω
Dimensions Height: 265mm (10.5 in) (not including feet)
Width:
Depth:
Net weight 4.9kg (10.8 lb)
™ tube-loaded aluminium dome tweeter
® brand fibre cone bass/midrange
™
over 10° arc
170mm (6.7 in)
284mm (11.2 in) (including grille and terminals)
® cone bass/midrange