Wharfedale Jade 3
Contents
1. It must have exceptional bandwidth capable of reaching depths without overhang It must fully coalesce with a package that is ambivalent to room surroundings and exhibits a broad even dispersion without phase interference or colouration Lastly it must at all times sound relaxed and effortless as it traverses the octaves Apart from submitting each individual drive units under testing and certification by a team of first class engineers each completed loudspeaker is subjected to scrupulous testing procedures the results of which have to be confirmed by our Director of Acoustic Design Peter Comeau WH_Jade_3_ W382 a_i pdf 2011 9 7 14 44 20 Advanced Drive Unit Design Wharfedale has engineered a new cone material called Acufiber an advanced material that marries the responsiveness of glass and carbon fibre materials with a self damping woven matrix The goal was to produce a neutral radiator which was responsive enough to transfer musical transients without dulling but naturally damp cone flexure to reduce colouration Acufiber cones also feature a moulded pattern which automatically breaks up standing waves in the cone to further reduce colouration and distortion enabling the cone to behave closer to the theoretical acoustic piston without the high Q resonances experienced by formed metal cones The Acufiber cone is coupled to one of the most linear drive motor systems yet devised for a loudspeaker The voice coil is immersed2. WH_Jade_1_ 8 W pdf 2011 9 9 11 23 27 Fe Mage E fin ae i Le Tis KK KKK Jade 5 Oct 2011 IAG House Sovereign Court Ermine Business Park Huntingdon Cambs PE29 6XU UK B ofA Z D DA Ce Hale Tel 44 0 1480 447700 Fax 44 0 1480 431767 _http www wharfedale co uk P E2 P 4c 4 J IAG reserves the right to after the design and specifications without notice All rights reserved IAG Group Ltd Wharfedale is a member of the International Audio Group CODE WH11 BR0005 WH Jade 2 pdf 2011 9 6 15 50 13 Peter Comeau Director of Acoustic Design Designer s Message Uncompromising in design and manufactured with care and precision by Wharfedale engineers Jade loudspeakers are constructed using the finest materials available Using traditional craftsmanship combined with the latest advances in acoustic technology we are able to uphold a Wharfedale tradition of excellence in sonic performance and furniture quality cabinet making dating back more than seventy years Wharfedale ensures the very highest standards of manufacture and performance are maintained for the Jade series To this end each individual drive unit and crossover is thoroughly tested and certified by a Wharfedale acoustic technician Each completed loudspeaker is then subjected to a rigorous testing procedure and matched accurately to Wharfedale s reference standards The Jade Series offers more than just hi fi reproduction In performance it is close
3. elivery to the next The result is a cohesive natural sound that acts as a window into the musical performance the speakers audibly disappear enabling you to concentrate on the music and only the music Jade Stands The Jade stands are suitable whenever you want to hear small speakers at their best They ensure speakers locate at the correct height provide vibration damping and isolate vibration from the floor The Jade stands are 645mm tall with steel floor spikes They use one big column which can be used for wires to go through and two small columns With metal columns between a wooden top plate and a heavyweight Jade style wooden plinth the stand minimises the vibration transmission and there are rubber pads on the top plate for isolating and steadying the speaker The stylish and solid spikes maximise the absorption of vibrations into the ground and allow easy height adjustment The acoustic performance of the Jade stands is excellent the soundstage is coherent detail and clarity are not sacrificed in favour of integration and the midrange is natural and clean Aperiodic Cabinet Loading In 1958 Gilbert Briggs the founder of Wharfedale described in the Fifth Edition of his seminal book Loudspeakers a method of cabinet loading which used a resistive acoustic filter instead of the more common hole or port in the cabinet as a form of tuning Unwittingly based more on the subjective results of listening tests rat
4. eneers that are polished to reveal unique grain patterns and its depth of colour After which each loudspeaker is then subjected to a 7 day process of gloss lacquer application to achieve its exquisite piano finish making Jade series the ideal choice of loudspeaker to accentuate even the most sophisticated home environment WH_Jade_6_ fil pdf 2011 9 7 18 25 41 Finishes VENEER PIANO Black Oak Piano Black Vintage Cherry Burgundy Burr RoseWood Specifications Description Format Enclosure Type Drive Units Tweeter Midrange Bass Frequency Response Sensitivity 1W 1M A V shielded Crossover Frequency Nominal Impedance Recommended amplifier Power RMS Dimensions Height including spikes Net weight Accessories Surround wall mounting Centre channel H 347mm H 195mm W 300mm W 664mm D 165mm D 300mm Specifications are subject to change without prior notice Centre channel Jade 1 Stand mounting H 37 6mm W 195mm D 328mm Jade 7 Floorstanding H 1180mm W 273mm D 448mm
5. esonance which continues for 25mS in the Reflex system For the Jade system the initial transient is followed by a small overshoot and no resonance Briggs original idea was to cut thin slots in a shelf inside the speaker leading to the reflex port The slots acted as an acoustic resistance which controlled the damping of the resonance For the Jade 5 and Jade 7 floorstanding speakers the Aperiodic system is enabled by opening a port in the base of the cabinet which is then tuned by a slot formed by the space between the base of the cabinet and the top surface of the plinth This slot is then filled with resistive porous foam that controls the airflow from the port Additional benefits of the Jade Aperiodic system are that wind noise or chuffing from the port is completely absent and there is no midrange leak from the inside of the cabinet As a result of the Aperiodic tuning Jade 1 Jade 5 and Jade 7 produce an extended bass range which has terrific articulation and clarity A further benefit is that the speakers are easily integrated into the listening room and have greater freedom in their positioning Art amp Music Combined Jade series loudspeakers are not only capable of reproducing the best possible sound but are also considered works of art Complementing the intricate details put into perfecting its sound reproduction capabilities each model in the Jade series is built with specially chosen matched pairs of real wood v
6. her than theoretical appraisal he had hit upon a method of Aperiodic loading of the cabinet and driver Aperiodic means simply without period or more particularly for a loudspeaker without resonance Both reflex loading and closed box speakers are normally high resonance systems This is particularly true of reflex systems where the resonance of the cabinet air volume and port is deliberately encouraged so as to produce an increase in low bass output Associated with this resonance is one particular problem and that is that the system continues to produce sound AFTER the initial musical transient has stopped At its worst the bass takes on a one note boomy quality but even when controlled this resonance can still blur the clarity of the low frequency output making instruments sound unnatural and indistinct Aperiodic loading overcomes this problem whilst still allowing for the port to extend the low bass output of the loudspeaker It replaces the highly resonant behaviour of the reflex loaded cabinet with a much simpler solution where no resonance is encouraged and the musical transient is reproduced without ringing therefore maintaining its accuracy and clarity WH_Jade_5 iil pdf 2011 9 7 14 56 01 LogChirp Impulse Response 40 ms 45 The Jade Aperiodic System The graph above shows a comparison between a typical Reflex system red and Jade 7 Aperiodic system white The initial transient tall spike is followed by r
7. in a magnetic field focused to produce balanced forces for push pull linearity In addition the voice coil features shorting rings to reduce the usual effects of inductance resulting in cleaner and more extended midrange response Cabinet Design and Construction 1 T yoke i 2 Magnet JADE s cabinets are a work of art both visually and in the 3 Top Plate advanced manufacturing techniques employed by 4 Chassis Wharfedale 5 Spider 6 Voice coil Curved cabinet construction incorporates the latest material 7 Cone technology developed by Wharfedale engineers called 8 Surround Crystalam This laminated material is formed from a series of critically specified natural wood elements and composites formulated to reduce panel vibration and acoustic leakage to below the threshold of audibility Each Crystalam layer is bonded to allow microscopic sliding of one layer upon another producing a natural damping effect that effectively quells the usual panel resonance experienced in loudspeaker cabinets As well as reducing the Q of the panel resonance peaks the composite layers also spread the resonances over a wide frequency band thereby avoiding the acoustic signature readily heard from plain MDF cabinets In addition the multi layer composite construction provides an acoustic barrier to stop sound from inside the cabinet escaping through the cabinet walls The total effect of Crystalam is to reduce the sonic character of
8. r to an outstanding music reproducing instrument allowing the listener to become involved in the musical performance by immersion in the full emotion and passion engendered by the original musicians We call this the Wharfedale Experience and know that as you begin to appreciate the performance of these loudspeakers you will enjoy a lifetime of musical pleasure Jade is the latest audiophile class speaker design from Wharfedale the world s most famous hi fi brand It incorporates all of the latest improvements in loudspeaker design and manufacture using IAG s vertically integrated ISO9001 factory facilities Computer aided modeling and precision tooling enables Wharfedale to produce the highest performance results from this stunningly designed range of speakers With every single part of every drive unit and component manufactured in our own factory we have complete control over each and every aspect of quality in manufacturing our loudspeakers to ensure they can provide its owners a lifetime of indulgence Engineered to offer something beyond the ordinary and to be considered an exceptional music reproduction instrument each Wharfedale loudspeaker must meet a number of our exacting criterion It must present breathtaking detail and resolution which requires a tweeter with a response well into the inaudible frequency spectrum It must possess a neutral realistic midrange that s uncoloured by cabinet boxiness and revealing of the true recording
9. the cabinet to the point where it cannot be heard below the sound coming from the drive units i WH_Jade_4 pdf 2011 9 6 17 28 07 P Phase Linear Crossovers One of the bugbears of hi fi loudspeaker design is how to crossover effectively from one drive unit to another Traditionally this has meant long hours spent measuring and testing each loudspeaker system still with a less than perfect result For the Jade Series Wharfedale has utilized the most advanced measurement techniques in conjunction with 21st Century computer crossover modeling systems to help achieve a seamless integration between the drive units First the speaker system is measured in Wharfedale s new anechoic chamber and the mechanical properties of the drive units are characterized by the Klippel system These characteristics are then imported into the crossover modeling software where Wharfedale s engineers can model the desired performance Each prototype crossover is then evaluated in our listening rooms and optimized by ear using a wide range of musical styles From that experience the crossover is once again simulated on the computer and any wrinkles in the performance are ironed out This process is repeated many times until the perfect performance is reached In order to achieve a seamless integration between the drive units the crossover has to be phase linear That means that the ear hears no discontinuity as each drive unit hands over sonic d
Download Pdf Manuals
Related Search