WHARFEDALE Diamond 320 Walnut Pearl Speakers (Pair)

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.

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)

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)

AVAILABLE IN SIX COLOR FINISHES

System Format:    2 Way
Frequency Response:    42 Hz - 60 kHz
Sensitivity (1W@1M):    88 dB
Nominal Impedance:    8 ohms
Maximum S.P.L
(Per pair in room):    112.6 dBA
Power Handling (RMS):    120 W
Recommended Amplifier Requirements (RMS):    60 - 120 W
Bass Alignment:    Bass reflex. HiVe port system
Crossover Frequency:    2.7 kHz
Drive Unit Compliment:    1 x 6.5" RST bass/mid-range driver
1 x C-CAM H.F ribbon transducer
External Dimensions excl Stand (H x W x D)

362 x 210 x 303 mm
(14 3/8 x 8 1/4 x 11 15/16 inch)
Weight (each) Excluding stands:    9.9 Kg (21.75 lbs)

Frequency Response: 80 Hz - 35 KHz
Sensitivity (1W@1m): 87 dB
Nominal Impedance: 8 Ohms
Power Handling Single (RMS): 60 W
System Power Handling (RMS): 100 W
Recommended Amplifier Requirements: 10 - 100 W
Maximum SPL (dBA): 105
Bass Alignment: Bass reflex - rear ported
Drive Unit Complement: 1 x 100mm (4“) MMP®II cone mid-bass driver.
1 x 25mm (1“) C-CAM® gold dome tweeter
External Dimensions
(H x W x D): mm (inches) 198 x 125 x 140 mm
(7 13/16 x 4 15/16 x 5 1/2)
Weight (each):
Kg (lbs) 2 (4 3/8)