Info Sheet

683
Technical features
Description
Drive units
Frequency range
Frequency response
Dispersion
Sensitivity
Harmonic distortion
Nominal impedance
Crossover frequency
Recommended
amplifier power
Max. recommended
cable impedance
Dimensions
Net Weight
Finishes
Decoupled Double Dome aluminium tweeter with Nautilus
™
tube loading
Kevlar
®
brand fibre cone FST
™
midrange driver
Dual-layer aluminium cone bass driver
Flowport
™
3-way vented-box system
1x ø25mm (1 in) aluminium dome high-frequency
1x ø150mm (6 in) woven Kevlar
®
cone FST
™
midrange
2x ø165mm (6.5 in) aluminium cone bass
-6dB at 30Hz and 50kHz
52Hz - 22kHz ±3dB on reference axis
Within 2dB of reference response
Horizontal: over 60º arc
Vertical: over 10º arc
89dB spl (2.83V, 1m)
2nd and 3rd harmonics (90dB, 1m)
<1% 95Hz - 22kHz
<0.5% 120Hz - 20kHz
8V (minimum 3.0V)
400Hz, 4kHz
25W - 200W into 8V on unclipped programme
0.1V
Height: 985mm (38.8 in) cabinet only
1020mm (40.2 in) including plinth but not feet
Width: 190mm (7.5 in) cabinet only
320mm (12.6 in) over plinth
Depth: 364mm (14.3 in) cabinet, grille and terminals only
370mm (14.6 in) over plinth
27.2kg (59.7 lb)
Cabinet: Grille:
Black Ash Black
White Light Grey