Diamond 12.0
Klarity aû ords focus
NEW Klarity™ cone material, formulated from a blend of Polypropylene and mica adds stiû ness to reduce ûexing, enabling a lightweight cone with high rigidity, low colouration and lightning-fast response.
Low colour and expression
The Klarity™ cone is ûtted with a low-damping surround, thereby achieving both low colouration and expressive dynamics. By simulating many diû erent cone shapes and adding ribs to provide further stiû ening, a ûat response curve was achieved without resorting to a high-damping surround, thereby striking the ideal balance.
A magnet of forces
A precision-made magnet system with an aluminium compensation ring to minimise the eû ect of variations in inductance as the voice coil travels. This contributes to an absence of distortion and intermodulation generated by the ‘motor system’.
A voice coil beyond this class
The voice coil is wound on a high-power epoxy/glass ûbre 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 stiû er than the Kapton type associated with this price-class.
DIAMOND highs
The 25mm dome is made from a woven polyester ûlm 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 ûat 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 modiûed 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 identiûable 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 speciûc 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 ‘ûgure of eight’ brace, which may simply transfer resonance from one wall to another.
General description 2-way bookshelf speaker
Enclosure type bass reûex
Transducer complement 2-way
Bass driver 4"(100mm) advanced PP Cone
Treble driver 1"(25mm) Textile Dome
AV shield No
Sensitivity(2.83V @ 1m) 87dB
Recommended ampliûer power 20-60W
Peak SPL 95dB
Nominal impedance 8Ω Compatible
Minimum impedance 4.0Ω
Frequency response(+/-3dB) 70Hz ~ 20kHz
Bass extension(-6dB) 65Hz
Crossover frequency 2.7kHz
Cabinet Volume (in litres) 4.4L
Dimensions ( H x W x D ) 265 x 160 x (200+28) mm
Net weight 5.1kg/pcs
