B&W 684 S2 Floorstanding Speakers – Compact, Nautilus Tweeters

B&W 684 S2 Floorstanding Speakers – Compact, Nautilus Tweeters

Slim B&W 684 S2 floorstanders delivering room-filling, articulate sound with included plinths for added stability and control.

The B&W 684 S2 is a 2-way vented-box floorstanding loudspeaker from the 600 Series S2, designed to offer serious hi-fi performance in a slim, décor-friendly cabinet. Using a decoupled double-dome aluminum tweeter with Nautilus tube loading and dual 5-inch woven Kevlar bass/midrange drivers, the 684 S2 combines clarity, dynamics, and low-frequency reach that make it equally at home in music-first systems and as front channels in home theater setups. This pair, finished in black ash, includes the original matching plinths, which broaden the footprint and significantly improve stability on hard floors and carpet, helping the speakers lock in imaging and bass response. Condition is very good, with only light cosmetic wear consistent with careful use.

At 87 dB sensitivity and an 8-ohm nominal impedance (4 ohms minimum), the 684 S2 is a friendly load for quality modern integrated amplifiers and AVRs in the 50–150 watt range, yet revealing enough to show the benefits of higher-grade amplification. Reviewers consistently praised the S2 update for its improved tweeter resolution and more open midrange versus the original 684, noting its ability to project a wide, stable soundstage from a relatively compact cabinet footprint. The front-mounted Flowport reflex port allows more forgiving placement near rear walls compared with rear-ported designs, which is particularly helpful in real-world rooms. In practice, the 684 S2 offers convincing bass weight for most musical genres at normal listening levels, yet integrates well with a subwoofer in home theater applications.

The slim tower format and black ash finish help these speakers blend neatly into living spaces while still looking purposeful and modern. Bi-wire capable terminals allow users to experiment with bi-wiring or bi-amping if desired, while the supplied plinths and spikes or rubber feet provide a solid mechanical foundation. This pair has been fully tested and is performing as intended, ready to drop into a high-quality two-channel or home theater system.

Key Specifications:

Design: 2-way vented-box floorstanding loudspeaker

Drive units: 1 x 25 mm aluminum dome high-frequency, decoupled double-dome tweeter with Nautilus tube loading; 2 x 130 mm woven Kevlar cone bass/midrange drivers

Frequency range: -6 dB at 45 Hz and 50 kHz

Frequency response: 72 Hz – 22 kHz ±3 dB on reference axis

Sensitivity: 87 dB SPL (2.83 V, 1 m)

Nominal impedance: 8 ohms (minimum 4 ohms)

Recommended amplifier power: 25 W – 150 W into 8 ohms on unclipped program

Crossover frequency: 4 kHz

Cabinet: MDF enclosure with front-firing Flowport reflex port

Plinths: Included, with provision for spikes or rubber feet

Terminals: Bi-wire capable binding posts with removable links

Finish: Black ash

Condition: Very good, fully tested

Dimensions: (Height x Width x Depth, cabinet only) 920 x 160 x 234 mm (36.2 x 6.3 x 9.2 inches)

Weight: 14.2 kg (31.2 lbs) each

At 14.2 kg per speaker, the 684 S2 has enough mass to feel solidly planted, with cabinet rigidity and internal bracing that support clean midrange and controlled bass. The included plinths broaden the footprint for enhanced stability, especially on carpet, making these particularly well suited to medium-sized listening rooms or living spaces where slim, visually unobtrusive speakers are preferred over large enclosures.

This pair of B&W 684 S2 in black ash with plinths offers an excellent blend of musical refinement, dynamic capability, and room-friendly proportions, making them a strong choice for listeners stepping into serious loudspeakers or upgrading from compact standmounts.

Backed by Radique Audio’s 90-day warranty and our perpetual trade-back policy, you can purchase with confidence; asking $1095.