Content | The true all-rounder, the Wharfedale DIAMOND 12.1 is a traditional standmount (or bookshelf) speaker that embodies the history and performance values of the Wharfedale DIAMOND series.
The perfect ‘affordable’ hi-fi speaker, the DIAMOND 12.1 offers the best of both worlds – compact size with power and detail.
Perfect for 2-channel hi-fi systems, thanks to its intricate performance but also compact and capable for immersive home theatre, the DIAMOND 12.1 is designed and certified to perform, regardless of room size and application.
The DIAMOND 12.1 features a high-performance 130mm (5”) KlarityTM driver for exceptional timing and refined bass. The superb 25mm (1”) woven polyester dome tweeter delivers open and smoothly extended high frequencies.
A voice coil beyond this class
The voice coil is wound on a high-power epoxy/glass fibre bobbin highly unusual in speakers at this price level. This has the advantage of not adding eddy currents and delivering greater power handling than an aluminium bobbin, whilst also being much stiffer than the Kapton type associated with this price-class.
DIAMOND highs
The 25mm dome is made from a woven polyester film with a high-loss coating to deliver open and smoothly extended high frequencies. The magnet system and the front plate have been optimised for wide dispersion and uncompressed behaviour. The front plate is flat and exposes the dome as much as possible; only a very short duct on the front plate balances the acoustic load and improves the SPL (sound pressure level) measurement.
A crossover of style
The crossover network uses an acoustic LKR 24dB topology. This includes air-core inductors of the type more commonly found in high-end speakers, selected because they produce the lowest distortion of all inductor types. As the resistance of the coil is higher than a standard laminated steel or ferrite core inductor, the magnetic structure of the mid/bass driver has been modified to compensate, resulting in fast, clean bass with no distortion from the inductor.
Firm and fair
The DIAMOND 12.1 ’s rear-ported enclosure is precisely sized so that the internal volume works in harmony with the drive unit system to deliver the desired sonic result. A multi-layered sandwich design subdues the identifiable characteristics of the cabinet’s ‘sound’. Even the resonant properties of the glue between the layers was measured to determine the optimum combination.
Brace yourself
Inside the cabinet, Intelligent Spot Bracing connects opposite walls with a specific form of the wood brace to achieve an optimal reduction of cabinet resonance. These braces are precisely modelled by computer simulation to improve upon the commonplace ‘figure of eight’ brace, which may simply transfer resonance from one wall to another.
Specifications :
General description 2-way bookshelf speaker
Enclosure type bass re?ex
Transducer complement 2-way
Bass driver 5"(130mm) advanced PP Cone
Treble driver 1"(25mm) Textile Dome
AV shield No
Sensitivity(2.83V @ 1m) 88dB
Recommended ampli?er power 20-100W
Peak SPL 96dB
Nominal impedance 8Ω Compatible
Minimum impedance 4.0Ω
Frequency response(+/-3dB) 65Hz ~ 20kHz
Bass extension(-6dB) 60Hz
Crossover frequency 2.6kHz
Cabinet Volume (in litres) 8.2L
Dimensions ( H x W x D ) 312 x 180mm x (250+28) mm
Net weight 6.8kg/pcs |
- Time Lens Technology-The acoustic centers of the tweeter and mid-bass driver are located in the same plane for superior imaging
- PowerPort® a patented Polk technology, extends the low frequency mid-bass driver response as it decreases air turbulence, and eliminates "port noise" and bass output losses up to 3 dB.
- 3/4" Silk Dome Tweeters for crisp, clear imaging and smooth response that's never tiring.
- 3 1/4" Composite Injection Molded Cones With Dynamic Balance Driver Technology
- Combination Keyhole Slot & 1/4" x 20 Threaded Insert fits all aftermarket ceiling and wall brackets for ultimate flexibility
- Time Lens Technology-The acoustic centers of the tweeter and mid-bass driver are located in the same plane for superior imaging
- PowerPort a patented Polk technology, extends the low frequency mid-bass driver response as it decreases air turbulence, eliminates "port noise" and bass output losses up to 3 dB.
- 3/4" Silk Dome Tweeters for crisp, clear imaging and smooth response that's never tiring.
- 3 1/4" Composite Injection Molded Cones With Dynamic Balance Driver Technology
- Combination Keyhole Slot & 1/4" x 20 Threaded Insert fits all aftermarket ceiling and wall brackets for ultimate flexibility.
Driver Complements
Mid/Woofer 1 - 3 1/4" Diameter (8.26cm)
Dynamic Balance composite cone driver
Tweeter 1 - 3/4" Diameter (1.91cm)
silk dome
Electrical
Overall Frequency Response 95Hz-24kHz
Lower -3dB Limit 125 Hz dB
Upper -3dB Limit 20kHz dB
Nominal Impedance 8 ohms
Recommended Amplifier Power 10-125 w/channel
Efficiency 89 dB
Inputs Gold-plated 5-way binding posts
Dimensions
Cabinet Size 7 1/8" H x 4 1/8" W x 5 3/16" D
(18.10cm H x 10.48cm W x 13.18cm D)
Mounting Options keyhole slot; .25 x 20 threaded insert
Enclosure Type Steel-plate reinforced curved enclosure with time-aligned driver geometry and PowerPort bass venting
Shipping/Other
Product Weight 3.00 lbs. (1.36kgs)
Shipping unit: each
Total Shipping Weight 3.70 lbs. (1.68kgs)
Speaker Warranty 5 years parts and labor (original purchaser)
ΔΙΑΤΙΘΕΤΑΙ ΚΑΙ ΣΕ ΑΣΠΡΟ ΧΡΩΜΑ
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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 ø165mm (6.5 in) woven Kevlar® cone bass/midrange
Frequency range -6dB at 45Hz and 50kHz
Frequency response 52Hz - 22kHz ±3dB on reference axis
Dispersion Within 2dB of reference response
Horizontal: over 60º arc
Vertical: over 10º arc
Sensitivity 88dB spl (2.83V, 1m)
Harmonic distortion 2nd and 3rd harmonics (90dB, 1m)
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Dimensions | Metric :4-3/4" W x 5" D x 8-3/8" H | 12.1 x 12.7 x 23.8 cm
Driver Complement :One 1" pure aluminum dome tweeter; One 4-1/2" BDSS bass/midrange drivers; One 4-1/2" pressure coupled bass radiator
Frequency Response :57 Hz – 30 kHz
Impedance :Compatible with 8 Ohms outputs
Sensitivity :89 dB
Recommended Associated Amplifier Power :10 – 150 watts
A/V Receiver Crossover Setting :100 Hz
Inputs :One pair of 5 way binding posts
Available Finishes :Gloss Black; Gloss White
Included Accessories :Tripod Base; Two ¼ 20 insert cover plugs
Mounting Options :Vertically: On Shelf with included tripod base; Equipped with rear ¼ 20 sized thread to accommodate on wall/on ceiling mounting with aftermarket mount(available separately); Equipped with bottom ¼ 20 sized thread to accommodate ProStand 600/800 stand mounting (ProStand 600/800 available separately); Equipped with keyhole mounting slot for flush mounting
Packaging :One to a carton
Weight | Metric :4 lbs | 1.8 kg
Warranty :5 Years
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# Perfect for use with 55-inch class and larger ultra-shallow TVs
# Only 1.5 inches (38mm) deep
# Wall mount bracket and table stand included
# Simply the best ultra slim on-wall speaker on the planet
# The dynamic punch, wide frequency range and broad dispersion of full size speakers
# Aircraft grade extruded Aluminum enclosure
# Anodized Aluminum dome XTDD drivers
# Pure Aluminum dome tweeter
Dimensions (mounted on wall without bracket) :32" H x 6" W x 1-1/2" D (81.5cm x 15.2cm x 38mm)
Dimensions (mounted on wall with bracket) :32" H x 6" W x 1-9/16" D (81.5cm x 15.2cm x 40mm)
Dimensions (on table stand) :35" (89.1cm)
Table-stand base dimensions :8-11/16" W x 4-3/4" D (222mm x 136mm)
Driver complement :4 each 3-1/2" (90mm) XTDD anodized Aluminum dome mid/bass drivers pressure-coupled to 4 each 3-1/2" (90mm) dome low-bass radiators, 1 each 1" (25mm) Pure Aluminum Dome Tweeter
Frequency response (overall on wall) :70Hz - 30kHz
Sensitivity :92dB
Impedance :8 Ohms nominal
Recommended amplifier power :30 - 200 Watts per channel
Enclosure :Extruded Aluminum, sealed
Supplied accessories :Smoked glass base table stand, wall mount bracket, adjustable support foot for horizontal shelf placement, magnetic logos
Packaging :One to a carton
Available finishes :High gloss black
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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.
Technical features | Metal dome Nautilus™ tweeter |
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| Woven glass fibre cone bass / midrange | Description | 2-way vented-box system | Drive units | 1x ø25mm (1 in) metal dome high-frequency |
| 1x ø100mm (4 in) woven glass fibre cone bass / midrange | Frequency range | -6dB at 72Hz and 50kHz | Frequency response | 80Hz - 23kHz ±3dB on reference axis | Dispersion | Within 2dB of reference response | Horizontal: | over 60º arc | Vertical: | over 10º arc | Sensitivity | 85dB spl (2.83V, 1m) | Harmonic distortion | 2nd and 3rd harmonics (90dB, 1m) |
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