
Made in England
There are many
ways to approach building transducers, but Precision Devices follows
just one: an unremitting desire for excellence.
Their quest
for excellence ensures that all Precision Devices transducers
are imbued with quality from the first computer simulations by the
Research and Development team to the final product off the production line.
Precision
Devices transducers are individually hand-built in England to
exacting specifications and no compromise on quality is made in the
interests of making it easier to build. A Precision Devices
transducer is the product of assiduous care in all stages of
manufacture, from the initial blueprint to the end product. From
some of the worlds most powerful bass units to the most
intricate high-frequency devices, each Precision Devices transducer
is carefully crafted to give the highest levels of reliability,
performance and tonal distinction.
With roots
firmly in the touring sector, it is not surprising that PD is a firm
favourite with many of the worlds finest touring companies,
providing both front of house and monitor sound equipment for
internationally renowned artists and performing venues worldwide.
In a market in which rugged reliability is prized as an
essential selection criterion, Precision Devices are built to thrive,
not just to survive, in the most demanding of environments.
The world wide
reputation for high quality performance, reliability and ruggedness
is no accident - it is the result of a no-compromise approach to
delivering quality, commitment to providing world class customer
service and an unceasing quest to ensure that the products are at the
forefront of engineering development in the audio industry. They
are dedicated to providing clients with complete product
satisfaction and are proud to have their products used by many of the
worlds premier loudspeaker companies.
What makes a
Precision Devices transducer special?

THE PRODUCTS
All
loudspeakers are designed using the finest materials, with no
compromise on cost. They are all made in the PD factory in the South
West of England by craftsmen who take the utmost pride in producing a
perfect product.
CHASSIS
The unique
twelve-sided chassis are manufactured using die cast aluminium alloy
with added sectional strength, often twice as thick as that of most
other manufacturers. The result is a range of drive units that
wont fail even under massive physical shock. The unique design
ensures that the fixing holes used to house the speaker into the
cabinet are a good distance from the baffle hole in the cabinet. This
means that should the cabinet be dropped there is far less chance of
splitting between the holes and the bafflle.
Thick section chassis to ensure maximum heat transfer away from critical areas
Many chassis feature additional hidden mounting holes to allow maximum flexibility of installation
Extra wide flange prevents unwanted pressure from out-of-position fixing from distorting the chassis
CONES
The cones, also made in England, are carefully inspected prior to use to ensure they are within fine set tolerances. This ensures that a consistent sound quality will be found throughout the series.
Long fibre designs for improved internal damping and extra tear resistance
Air dried for optimum tonal qualities
MAGNET ASSEMBLY
The magnet
assembly is the engine of the speaker and only the finest materials
are used. The plate sets are precision machined in Sheffield, England
using top quality low carbon steel selected for its magnetic properties.
The
anisotropic ceramic magnets are tested to exacting tolerances to
ensure the highest BL factors. All magnets are tested to withstand
the extremes of working temperatures without loss of flux. This is
very important where speakers can be used in freezing temperatures
and also be driven to extremely high temperatures.
The fine
machining tolerances of the plate sets ensures the strongest possible
bond between magnet and plate set, further increasing the magnetic
strength. The tight tolerances used in the magnetic gap also
increase the cooling for the voice coil.
Precision CNC machined for closest possible tolerances, which minimizes variation
The strongest adhesives available are utilised for maximum shear strength, selected for their bond properties and never for speed of cure
Magnetized using our 100K Joule magnetizer to ensure total magnetization
VOICE COILS
The voice coil is the heart of the speaker. We produce a range of voice coils from 38.1mm (1.5") to 152.4mm (6") using both copper and aluminium wire. The wire is coated with high temperature enamel, and precision wound onto an epoxy resin-impregnated woven fibreglass former. This is then cured in a precise temperature controlled oven to ensure a rigid assembly that is essential for great strength and to maximise its energy transmission abilities.
Laminated construction for maximum strength
Wet wind process used on all coils, a key process in which component integrity has been chosen over production speed
The proprietary coil design/process, developed in-house, is carefully optimised to give maximum strength and longevity. No compromise has ever been considered just to deliver short-term gain
Close tolerance wires are sourced for minimum unit to unit variation
SUSPENSIONS
Poly cotton material for maximum strength and longevity
Material properties selected for optimum strength, adhesion and longevity
TERMINALS
All models use metal push terminals as standard to ensure a perfect termination without requiring soldering.
DUST CAPS
All models use a solid composition centre dome and work as an extension of the cone, giving a greater cone area.
Made from long fibre pulp and on processes optimised for sound quality and never for speed of production
ASSEMBLY
At the end of this chain is the vital step which guarantees that all the effort put into the design is reflected in the manufacturing quality.
All components are assembled by a modular process, and each module is then individually tested before being assembled into a complete unit. The result is a more accurate natural sound and improved reliability, through precisely-designed and manufactured components.
All processes and adhesives are chosen for their thermal and mechanical properties and never for speed of cure
Built using a
carefully controlled blend of operator controlled and automated
processes with in-built operator inspection at each key stage
Full specifications on all models can be found at www.precision-devices.co.uk
Note: If you
are looking to build your own PA cabinets to house these drivers,
there are lots of plans (for free) and many links to even more plans
on this useful site:
http://www.speakerplans.com
A-Designs
Audio ATM
Cables Celestion
Chassis Speakers/Drivers McGregor
Amplification MTR
Pro Audio Precision
Devices Chassis Spkrs
RaxX
19" Racking System
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