B&W 684

The extended bass response and output capacity of the 2½-way 684 floorstander make it a great choice for hi-fi or home cinema in medium-sized to large rooms.

It features a new combination of a pair of Kevlar® cones for delivering its bass and midrange. The lower cone is dedicated to bass, which relieves the upper bass/midrange unit of the duty to handle heavy bass and leads to clearer, crisper midrange than you might find in smaller speakers. The Nautilus™ tube-loaded, aluminium dome tweeter, featuring a new surround material to improve spaciousness and imaging, adds needle-sharp top end all the way to 50kHz and beyond.

The improvements to the drive units in the new 600 Series make it possible, for the first time, to introduce a minimalist crossover to the range. The use of components that are fewer in number but higher in quality – hand-picked in exhaustive listening tests – reduces the degradation of the signal significantly. So, whether you’re enjoying hi-fi or home cinema, what you hear is that much closer to what was recorded.

Visually, a refreshed, contemporary design language and a widened choice of wood finishes allows the 684 to fit in effortlessly with any interior.

Woven Kevlar	Yes
Crossover Tuning	Yes
Nautilus Tapering Tube	Yes
Flowport	Yes
Mushrooms
FST
Tweeter on Top
Matrix
Rohacell
Diamond Tweeters
Sphere / Tube Enclosure
De-Coupling
Nautilus
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 Vinyl
	Light Oak Vinyl
	Red Cherry Vinyl
	Wengé Vinyl