Prestige CANTERBURY SE, Руководство пользователя

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During the design of the crossover network the acoustic, mechanical and electrical interactions of the high and low frequency sections
have been fully analysed. The crossover is therefore an integral part of the design of the system. The crossover network provides complex
equalisation in both amplitude and phase for each section and fully integrates the response at the crossover point. All components are
high precision, low-loss and thermally stable. Specially selected components of the highest quality are used, such as Hovland polypropylene
capacitors, non-inductive thick film resistors with extensive heatsinking, and very low loss laminated iron core inductors. Wiring is by
Acrolink 6N (99.9999%), having a large crystal structure and stable atomic arrangement.
All components in the crossover network are hard wired to eliminate unwanted metal-to-metal contact and ensure freedom from
vibration. The components are laid out to minimise inter component coupling and are placed well away from the driver magnetic field.
High current switch blocks with gold-plated screw terminals permit user adjustment of high frequency sound radiation to suit differing
listening environments.
The complementary design of crossover and drive units means that the loudspeaker system as a whole behaves as a minimum phase
system over the audio band and therefore the acoustic sources of the high and low frequency sections are aligned in time and space to
ensure accurate reproduction of stereo images.
The Crossover Network
A Note on Auditory Perception
Our hearing mechanism locates natural sound sources with great accuracy by using the naturally occurring phase differences (or arrival
times) at middle frequencies, and intensity differences at higher frequencies, between each of our ears. Naturally occurring sounds pass
through the air to the ears at constant speed (345 metres / second or 1132 feet / second). All frequencies travel at the same speed and
therefore a frequency independent time delay is associated with the distances involved. (The familiar time delay between a flash of
lightning and the associated clap of thunder is an example).
Human hearing relies on the constant nature of the time delay with the intensity to locate natural sounds accurately. A pair of Tannoy
Prestige loudspeakers can uniquely reconstruct stereo images and provide excellent localisation of recorded sounds. The Tannoy Dual
Concentric™ principle ensures that the source of sound at high frequencies is on the same axis as the source of sound at low frequencies.
The careful design of crossover network complements the drive unit to provide a coincident sound source at frequencies where the
human ear derives phase information for localisation. The loudspeaker system exhibits a time delay response that is in essence independent
of reproduced frequencies. In addition, the amplitude (or intensity) response is linear, smooth and consistent. This provides the correct
intensity information to recreate the original sound stage.
Care of the Cabinet
The cabinet is constructed from carefully selected solid walnut and walnut veneers that have been hand waxed before dispatch from
our finishing workshop.
To maintain the natural wood appearance it is important that only a wax of similar formulation is used.
A jar of specially formulated wax is included with each loudspeaker. This wax should be applied very sparingly with a soft lint-free cloth
(muslin for example) taking great care to avoid putting wax on the grille material. If necessary mask off the side grilles carefully with
clean paper, tucking it in and around the sides of the grilles. Work the wax into the wood covering a small area at a time.
In common with all solid wood furniture, exposure to extremes of heat, cold and varying humidity will cause the wood to ease slightly.
Therefore it is recommended that the loudspeaker is protected from environmental extremes to guard against any such occurrence.
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Alcomax 3 is an unusually high energy permanent magnet. The unusual iron / nickel alloy is doped with cobalt, aluminium and other
rare metals to produce a magnetic material with very special properties. Alcomax 3 has a high remanent magnetism and energy product.
In other words, it magnetises to a high level and retains that unusual degree of magnetisation. Alcomax 3 is also an electrical conductor.
These properties give the Dual Concentric™ drive unit using an Alcomax 3 magnet an exceptionally clean transient response and
increased sensitivity.
Alcomax Magnet
Faultfinding
Tannoy loudspeakers are designed and manufactured to be reliable. When a fault occurs in a hi-fi system the effect is always heard
through the loudspeakers although they may not be the source of the fault. It is important to trace the cause of the problem as accurately
as possible.
A fault heard on one source (only CD or tape for instance) is most unlikely to be a loudspeaker problem. Loudspeakers do not generate
hum, hiss or rumble although high-quality, wide-bandwidth loudspeakers may emphasise such problems.
Tannoy Quality
An important part of Tannoy's design philosophy is to produce loudspeakers with a level of performance beyond the most exacting
specifications of contemporary source equipment.
Loudspeaker design is no longer a 'black art'. It is now possible to use computers to model designs and predict results. Comprehensive
test equipment is used to pin-point problems with cabinets or drive units; anechoic chambers help in producing accurate measurements.
Computer aided design (CAD) and sophisticated test equipment are used extensively at Tannoy but we always remember that listening
tests must be the final judge.
Tannoy follows a policy of stringent quality control procedures using sophisticated measurement facilities. Strict quality control is more
easily achieved because all the loudspeakers are built in-house at the Tannoy factory in Scotland. All drive units are designed and
manufactured by Tannoy. All incoming parts are thoroughly tested to ensure that they are as specified. Not only is all data computerised
but CAD ensures every loudspeaker meets or exceeds our exacting standards.
Warranty and Service
Tannoy Prestige loudspeakers will operate for many years without trouble provided they are cared for as instructed.
Tannoy Prestige loudspeakers are warranted against manufacturing defects in material or craftsmanship over a period of 5 years from
the date of purchase. This warranty is in addition to your statutory rights as a customer. Tannoy cannot however be held responsible
for failures caused by abuse, unauthorised modifications, improper operations or damage caused by faults elsewhere in your system.
The determination of the cause of failure will be made by Tannoy Ltd or its authorised Distributor or Service Agent based on physical
inspection of the failed parts.
If you suspect a problem with your loudspeakers then in the first instance discuss it with your Tannoy Dealer. The Dealer has the
expertise and experience to help you troubleshoot the system and assess the situation.
If you continue to have problems contact your Tannoy Distributor or Tannoy Customer Services at our Coatbridge address.
Due to our policy of continuous improvement, all specifications are subject to change without notice.
Caution
The high peak power handling of Tannoy loudspeakers will allow responsible use with larger amplifiers on wide dynamic range material.
Take care with any amplifier, irrespective of power output, to avoid abnormal conditions such as switch-on surges or output overload
(clipping) that may result in peaks of power greatly over the rated output.