WHARFEDALE Diamond 320 Black Speakers (Pair)

Driver Complements
Mid/Woofer 1 - 6 1/2" Diameter (16.51cm)
Dynamic Balance driver with Super Cell Areated Polypropylene cone
Midrange 1 - 3 1/4" Diameter (8.26cm)
Dynamic Balance driver with Super Cell Aerated Polypropylene cone
Tweeter 1 - 1" Diameter (2.54cm)
Enhanced Ring Radiator Dynamic Balance tweeter
Electrical
Overall Frequency Response 36Hz-40kHz
Lower -3dB Limit 50Hz dB
Upper -3dB Limit 30kHz dB
Nominal Impedance compatible with 8 ohm outputs ohms
Recommended Amplifier Power 20-200 w/channel
Efficiency 88 dB
Crossover Orth Crossover
Crossover
(mid-high array) 2800HZ
Inputs Dual Gold-Plated Binding Posts
Dimensions
Cabinet Size 16 3/4" H x 8" W x 14 9/16" D
(42.55cm H x 20.32cm W x 36.99cm D)
Mounting Options speaker stands or shelf mount
Enclosure Type Sealed
Enclosure Type
(subwoofer) PowerPort bass venting
Shipping/Other
Product Weight 29.60 lbs. (13.43kgs)
Shipping unit: each
Total Shipping Weight 32.50 lbs. (14.74kgs)
Speaker Warranty 5 years parts and labor (original purchaser)

ALSO AVAILABLE IN "EBONY" COLOR

Woven Kevlar    
Crossover Tuning    
Nautilus Tapering Tube    
Flowport    
Technical features     Nautilus™ tube loaded aluminium dome tweeter

Kevlar® brand fibre cone bass / midrange

Flowport™
Description     2-way vented-box system
Drive units     1x ø25mm (1 in) aluminium dome high-frequency

1x ø130mm (5 in) woven Kevlar® cone bass / midrange
Frequency range     -6dB at 45Hz and 50kHz
Frequency response     55Hz - 22kHz ±3dB on reference axis
Dispersion     Within 2dB of reference response
Horizontal:     over 60º arc
Vertical:     over 10º arc
Sensitivity     84dB spl (2.83V, 1m)
Harmonic distortion     2nd and 3rd harmonics (90dB, 1m)

At home on a stand, wall or bookshelf, the versatile 685 S2 is ideal for stereo and home theatre uses in most rooms. And performance is enhanced with the addition of a Decoupled Double Dome tweeter.

The Decoupled Double Dome tweeter found in the 685 S2, and the rest of the new 600 Series, is technology taken straight from our award-winning CM10 speaker. A dual-layer design combines a thin aluminium dome for lightness and a thicker aluminium ring for rigidity - the result is absolutely stunning, with far greater clarity in the audible spectrum.

The tweeter is also decoupled from the main cabinet, kept physically separate in its own cavity with a ring of gel cushioning it from vibrations. This improves imaging and dispersion for a more natural, spacious treble.

As well as a decoupled, double dome aluminium tweeter, the two-way 685 S2 features a full-range 6.5-inch driver constructed from woven Kevlar and using Anti-Resonance Plug dustcaps, as seen in high-end Bowers & Wilkins speakers. The result is stunning audio quality from a highly versatile smaller speaker.

The M-1 has been engineered with the same design attributes and ethos as B&Wʼs larger ranges. Perhaps the most striking thing about the M-1 is the weight and strength of its curved aluminium cabinet. This is combined with a strong, glass-loaded ABS front baffle. Together they provide an excellent cabinet: the curved aluminium is stiff and the ABS offers excellent and appropriate damping characteristics.

The M-1ʼs drive units were developed by Bowers & Wilkins specifically for the design. The metal dome tweeter benefits from refinements developed for the new B&W 800 Series and includes Nautilus™ tube loading and neodymium magnets. The glass fibre bass/midrange coneʼs ability to absorb standing waves has been further enhanced by the inclusion of five strategically placed resin filled slots that further minimise distortion.

The result of this detailed cabinet and drive unit engineering has allowed B&Wʼs engineers to borrow another feature from the new 800 Series and utilise the simplest of electronic equalisation in the M-1ʼs crossover. Each of the drive units is fed by only a single, carefully selected component. This approach to crossover design, although painstaking as it relies on optimising all of the physical components in a design, is crucial in achieving its aim of neither adding to nor subtracting from the original signal.

The M-1 is available in three colour options - black, white and silver, each with chromium plated stem and table base.

Item    Value
System Format:     2 Way
Frequency Response:     55 Hz - 60 kHz
Sensitivity (1W@1M):     86 dB
Nominal Impedance:     8 ohms
Maximum S.P.L
(Per pair in room):     109.8 dBA
Power Handling (RMS):     100 W
Recommended Amplifier Requirements (RMS):     50 - 100 W
Bass Alignment:     Bass reflex. HiVe port system
Crossover Frequency:     2.3 kHz
Drive Unit Compliment:     1 x 5.5" RST bass/mid-range driver
1 x C-CAM H.F ribbon transducer

External Dimensions excl Stand (H x W x D)
    300 x 170 x 263 mm
(11 13/16 x 6 11/16 x 10 3/8 inch)
Weight (each) Excluding stands:     

7.5 Kg (16.5 lbs)