B&W 684
靈敏度(Sensitivity): 90dB   阻抗(Impedance): 8Ω
尺寸(WxHxD): 19.8 x 91 x 30 cm    重量: 18.2 kg
Woven Kevlar
Crossover Tuning
Nautilus Tapering Tube
Flowport
Technical features Nautilus™tube loaded aluminium dome tweeter

Kevlar® brand fibre cone bass/midrange

Kevlar® brand fibre cone bass driver

Flowport™
Description 2½ -way vented-box system
Drive units 1x ø25mm (1 in) aluminium dome high-frequency

1x ø165mm (6.5 in) woven Kevlar® cone bass/mid

1x ø165mm (6.5 in) woven Kevlar® cone bass
Frequency range -6dB at 34Hz and 50kHz
Frequency response 44Hz - 22kHz ±3dB on reference axis
Dispersion Within 2dB of reference response

Horizontal: over 60º arc

Vertical: over 10º arc
Sensitivity 90dB spl (2.83V, 1m)
Harmonic distortion 2nd and 3rd harmonics (90dB, 1m)

<1% 90Hz - 22kHz

<0.5% 120Hz - 20kHz
Nominal impedance 8Ω (minimum 3.0Ω)
Crossover frequencies 150Hz, 4kHz
Crossover Filters 1st Order – tweeter

1st Order – bass/midrange

1st Order – bass
Recommended amplifier power 25W - 150W into 8Ω on unclipped programme
Max. recommended cable impedance 0.1Ω
Dimensions Height: 910mm/35.8" (not including plinth or feet)
Width: 198mm/7.8
Depth: 300mm/11.8
Net weight 18.2kg (40.1lb)
Finishes Black Ash Red Cherry
二手價格
價格 說明 來源 日期  
35000 MyAV 2008-11-03