684

Room-filling sound without a room-filling speaker cabinet. Slimmer than ever before, the 684 S2 offers an amazing combination of floorstander power, audio performance and unbeatable value.

684

Switching to 5-inch bass/midrange drivers from the previous 6.5-inch cones, means the 684 S2 is now significantly slimmer than its predecessor, with simultaneously improved audio performance, thanks to Bowers & Wilkins innovation. The two Kevlar cone drivers benefit from smaller voice coils to increase sensitivity.

The 5-inch drivers now also feature Anti-Resonance Plug dustcaps, technology taken from our high-end PM1 speakers, that improve pistonic movement inside the voice coil. This helps to deliver amazingly distortion-free midrange performance, all in a smaller space.

As well as slimmer, improved driver performance, the 684 S2 also features a Decoupled Double Dome tweeter. Double dome technology, brought across from the CM10, increases tweeter rigidity for a more precise sound, while the tweeter sits in a gel-filled cavity, decoupled from the surrounding cabinet - which removes resonances and vibrations, for a more natural, spacious sound.

684
Woven Kevlar
Crossover Tuning
Nautilus Tapering Tube
Flowport
Technical features Decoupled Double Dome aluminium tweeter with Nautilus™ tube loading
Kevlar® brand fibre cone bass/midrange drivers
Flowport™
Description 2-way vented-box system
Drive units 1x ø25mm (1 in) aluminium dome high-frequency
2x ø130mm (5 in) woven Kevlar® cone bass/
midrange
Frequency range -6dB at 45Hz and 50kHz
Frequency response 72Hz - 22kHz ±3dB on reference axis
Dispersion Within 2dB of reference response
Horizontal: over 60º arc
Vertical: over 10º arc
Sensitivity 87dB spl (2.83V, 1m)
Harmonic distortion 2nd and 3rd harmonics (90dB, 1m)
<1% 140Hz - 22kHz
<0.5% 180Hz - 20kHz
Nominal impedance 8Ω (minimum 3.5Ω)
Crossover frequencies 4kHz
Recommended amplifier power 25W - 150W into 8Ω on unclipped programme
Max. recommended cable impedance 0.1Ω
Dimensions Height: 920mm (36.2 in) cabinet only
Width: 160mm (6.3 in) cabinet only
Depth: 234mm (9.2 in)
Net weight 14.2kg (31.2 lb)
Finishes Black Ash

Trusted Reviews August 2014
"With wonderful sound quality, low-key design and impressive driver technology, 684 Theatre is deserving of your hard-earned cash."
Read the full review

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