WBT magazin august 2012
2012 Issue
The new models:
Heavenly light & devilishly good!
All you need to know about the new nextgen™
pole terminals WBT-0703 and WBT-0708 ...
>> Page 12
The nextgen™ WBT-0703 and WBT-0708 pole terminals
now also available in white (limited edition)!
Content
3Editorial
4
Global: CES Las Vegas – WBT goes West
6
Silent Wire – Nothing but the best!
8
nextgen™: The ultimate benchmark
10
Avance – History and culture
12
Title story: The new models – Heavenly light & devilishly good
14KEF – Muon, Blade and Reference-Series
16
nextgen™: Feel what you hear
18WBT and Audio Physic: on the hunt for the sound killers
20
WBT production: Completely made in Germany
24Tannoy –
World renowned loudspeakers for musical perfection
26Background: The true importance of surfaces at an interface
28
WBT products
30
RCA connectors // nextgen™ // RCA plugs
31
RCA connectors // nextgen™ // RCA sockets
32Speaker connectors // nextgen™ // Banana plugs, Sandwich spades
33
Speaker connectors // nextgen™ // Pole terminals
34
RCA connectors // classic // RCA plugs
35Speaker connectors // classic // Banana plugs
36Speaker connectors // classic // Pole terminals
37
Finishing touches
39
Imprint
WBT Magazine: Editorial
Dear Audiophiles,
Technical possibilities are transforming and are offering serious research
a range of new opportunities. A tangible and audible result of such developments
are the WBT connectors in nextgen™ quality.
The road towards experiencing music at home in a way that is faithful to the original is a rocky one. It‘s not simply the components,
in other words the amplifiers, speakers or cables, that influence the
sound, the interfaces, the few centimetres between each component, do too. These interfaces are where the signal is transferred
from one component to the next. And this is where WBT comes in.
Wolfgang B. Thörner
WBT connectors from the classic series have set international
standards when it comes to reliability and contact safety. With our
nextgen™ models, we are taking this a step further.
nextgen™ connectors are certainly for audiophiles, but the tech­
nology is based on strict scientific principles of electrical engineering and material research. In-depth information on this can be
found on pages 8 and 9.
In contrast to conventional technology, nextgen™ technology
allows pure copper (or fine silver) to be used as signal conductors.
Conventional connectors simply use alloys which of course are
not 100% copper. By using high-quality materials, we have been
able to combine the established robustness of WBT products with
improved conductivity and therefore optimum audio fidelity.
nextgen™ connectors even save on valuable resources.
WBT products are enjoying increasing popularity all over the world,
not least because of these efforts and the legendary reliability.
Test WBT nextgen™ models now. In the future, you won‘t accept
anything less.
Yours,
Wolfgang B. Thörner
© by WBT
3
from left to right: Rich Moore (WBT-USA),
Klaus-Peter Brinsa and Wolfgang B. Thörner
on The Strip in Las Vegas
Las Vegas – the facts
The gambler‘s paradise is growing quicker than
any other city in the USA, and it is only home to
around half a million people. Despite this, the city
in the Mojave Desert welcomes 39 million visitors
every single year. The CES and the High-End trade
fair in Munich are the most important international
trade fairs for manufacturers of high-quality hi-fi
products ahead of the IFA in Berlin.
Global: CES Las Vegas – WBT goes West
goes West
There is barely any
other trade fair with such
great importance for entertainment electronics
as the CES (Consumer
Electronics Show) in the
gambler‘s paradise of Las Vegas. But it‘s not all gambling here, in January of every year the curtain is lifted on
the latest trends and product highlights from renowned
manufacturers in the audio-visual and computer industries. WBT has a long tradition in exhibiting at this show
together with the general agency in the USA.
In contrast to local trade fairs, the CES is only open
to manufacturers and retailers, and not to the general
public. „Think Big“ is what America – and particularly
Las Vegas – is all about and so it probably comes as no
surprise to hear about the enormous scale of the trade
fair and the huge number of exhibitors. This year, the
trade fair attracted over 3,100 exhibitors and more than
150,000 visitors. Together with huge multi-nationals
such as Microsoft and Sony, celebrities such as Justin
Bieber or professional basketballers also make a
splash. CEOs and developers cater for the necessary
technical expertise in exclusive specialist forums.
The particular focus of this year‘s CES were ultrabooks,
tablet PCs and the latest generation of televisions with
OLED (organic LED) technology.
But together with large companies, Las Vegas is traditionally also a place where smaller manufacturers and
creative centres from the fascinating world of high-end
technology can show off their innovations.
© by WBT
In this context, companies do not see the CES as
a competitive arena, rather as a place where the
standards of tomorrow can be discussed and strategic
alliances and partnerships can be formed – in perfect
harmony with the simple marriage laws in Nevada.
For WBT, this trade fair is the
ideal opportunity to reach out to
international partners, customers
and specialist press, together
with American visitors, and show
them the latest innovations and
trends from Essen. The latest
products from the nextgen™
series, such as the new pole
terminals, the unique WBT-0718
impact sound interrupter and
the other high-quality solutions
offered by WBT in the installation
sector, all attracted a great deal
of acclaim. This way, new contacts were able to be made with
manufacturers in China, Japan,
South Korea and Taiwan.
We are confident that music lovers will soon
find leading WBT products in further components,
par­ticularly in the music serve sector.
WBT-USA
Phone: 801-621-1500
E-Mail: [email protected]
www.wbtusa.com
5
Equipped with WBT: Silent Wire
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we searched
everywhere
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which
gave
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and
after
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beiworldwide,
der entwicklung
unserer
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searching
we found
it at WBT.
other
symbioses
waren
wir
auf
der suche
nach
klanglich
besten
steckern
die
(marriage
of
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and
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convinced
us more
than the
nur
durch
das
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technischem
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erreichen
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waren, und wir wurden weltweit nur bei WBt fündig.
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die
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messtechnisch
und
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symbiosestecker
(steckerverbindung
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konnte
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sofort
und so begann
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die WBt nextgen™ stecker überzeugten uns messtechnisch und
klanglich sofort und so begann eine sehr erfolgreiche Zusammenarbeit von WBt und silent – Wire von Beginn an.
6
What convinced us above all was the very fact that WBT has the
same passion for detail and takes the same intense care in the
development and manufacturing of its products as we do. It was
no coincidence that we chose WBT nextgen™. If we want to
manufacture the very best cable in the world, then we obviously
have no choice but to choose the world’s very best connectors.
Silent WIRE repeatedly sets new standards of supremacy on
which other manufacturers must base their achievements.
As for example in the very successful Silent WIRE Ag Series
for which we exclusively employ the WBT-0110Ag nextgen™
and the WBT-0152 nextgen™, which play a significant role in
the acoustic performance in the complete Ag Series.
Silent WIRE
www.silent-wire.de
© by WBT
7
nextgen™: The ultimate benchmark
nextgen™ – the ultimate benchmark
nextgen™ connectors define the technological boundaries
for A/V connectors
Nowadays, what has always been the driving
force behind WBT is common knowledge:
Connectors are far more than simply electrical
contacts. We know about the importance of
mass storage effects or the influence
of materials used, and even the shape of
these materials, on signal transfer.
WBT has been carrying out fundamental
research for over 20 years now and, with
nextgen™, has conceived a product range
that, and it is no exaggeration to say, defines
what is currently possible in technological
terms.
There are fundamental differences between
connectors from the WBT nextgen™ series
and conventional connectors; starting from
the materials used and moving on to the
manufacturing process.
8
The nextgen™ principle is the first technique
which allows pure copper or fine silver to be used
as signal conductors without compromising on
robustness and the long-term behaviour of the
connectors.
Conventional connectors are turned parts, meaning
that copper is actually relatively unsuitable as a
material as it is too soft. That is why stronger alloys
are used in the manufacturing process. The elec­
trical conductivity of these alloys is poorer than that
of pure copper or fine silver. As the connectors
are usually made solely from metal, there is also a
danger that mass storage effects and eddy currents
occur which affect the signal transfer and therefore
represent a further reduction in quality.
WBT nextgen™ connectors do not have to deal with
this problem. They are the only connectors which
take the latest findings from the fields of electrical
Benefits of nextgen™ at a glance
Unhindered signal transfer through mass optimisation
90% reduction in metal mass, so no mass storage effects.
This improves audio spatiality considerably.
■■••Around
Purer signal transfer
■■••Losses as a result of eddy currents are practically eliminated thanks to the
new geometry. So the signal is clearer, like it has been removed of any extra baggage.
Stronger foundations
■■••Through pure, soft copper (optionally also fine silver), the internal resistance of the
contact materials is optimised significantly. The sound is given much more substance.
Real, standard-compliant RCA connectors with 75 ohms
■■••nextgen™ RCA connectors consist of connectors and sockets and are future-proof.
Thanks to the 75-ohm line impedance, they are also finally able to carry digital signals
with a bandwidth of up to 1GHz. Analogue signal transfer also benefits considerably
from the enormous bandwidth.
■■••The
central contact unit of the
WBT-0110 nextgen™ RCA connector.
Contemporary & green
■■••The modern, hybrid manufacturing process saves 90% of valuable non-ferrous
metals (copper and brass) whilst increasing the technical and sound performances
at the same time. This makes it unique.
and mechanical engineering into consideration.
Losses resulting from eddy currents and the mass
storage effect are eliminated by the reduction of metal
and the use of modern materials. The actual signal
conductor consists of pure copper or fine silver (no
alloys!). Thanks to the nextgen™ composite technology,
the mechanical robustness is in no way inferior to that
of our globally-established classic series. nextgen™
provides audible and measurable quality and has
exhausted the potential of what is technically possible.
Speaker connectors also benefit to a significant extent
from the technological progression made possible by
nextgen™ technology. In addition, our pole terminals
have unique optimised conductor geometry which has
been determined over the course of countless testing
and measurement processes. For the first time, this
allows the highest possible transfer safety in conside­
ration of the disruptive influence of structure-borne
sound. More information about this important subject
is available on the following pages.
Using nextgen™ connectors has clear advantages
whatever the application. RCA connectors and sockets
have a line impedance of 75 ohms in accordance with
the latest standards – the perfect basis for perfect
digital signal transfer. With a bandwidth of one gigahertz (conventional connector bandwidth is a mere
fraction of this), the models are also state of the art
when it comes to analogue signal transfer.
Alongside these invaluable advantages, nextgen™
also conserves important resources and are – just like
all other WBT products – manufactured exclusively in
Germany using modern and environmentally-friendly
methods. nextgen™ connectors define the ultimate
state of the art.
© by WBT
nextgen™ is a WBT development line and internationally patented.
WBT ® and nextgen™are registered trademarks of WBT Germany.
WBT-signet™ is an internationally protected symbol of quality and
originality. Forgery-proof!
9
Equipped with WBT: Avance
AVANCE INTERNATIONAL A/S
equipped with
WBT presents:
AVANCE HISTORY AND CULTURE
AVANCE was set up in ancient Kingdom of Denmark in year of
1973 by Mr. Poul Rossing, and with a following nearly 40 years’
construction, AVANCE has been developed to one worldwide
recognized HIFI brand with rich experience of audio manufacture
and striving for highest live sound reproduction quality.
“The essence of audio is to reproduce the origin of the sound
performance”, and this represents AVANCE philosophy of audio
manufacture and design after nearly 40 years development. In
70’s last century, AVANCE experienced a truly great sales success
by developing and manufacturing the world first asymmetrical
AVANCE CONCRETE high end speakers with virtually non-resonant
enclosures made of a mixture of cast fiber concrete and glass
fibers. In the following years, AVANCE has continued its great
commercial achievements by introducing classical products of
Alpha, Omega, Beta, Dana, Signature, Epsilon, Sigma and Century
line-up (all using custom made top quality drive units from the
Danish high end brand Scan-Speak), together with best sellers
of K, Viking, Stylish and other life-style series loudspeakers. In
the early of 21st century, AVANCE introduced the first aluminum
cabinet loudspeakers of S series, which brought audio into a new
era and opened one complete stylish and fashionable world to
audio customers.
Today AVANCE loudspeakers feature heavy and rigid enclosures
and top quality drive units that always brings AVANCE among the
best in tests. The cabinets are manufactured from high density
fiberboard and are all extendedly braced and assembled using
non-hardening glues. Inside you‘ll find high quality crossover
networks dependent on the drive units used and the particular
needs for target sensitivity, sound dispersion and frequency
response.
10
AVANCE SMALL FLAGSHIP LOUDSPEAKER –
CENTURY 6
In 2011, AVANCE has developed new Flagship Sound of Century
line-up: Super Century, Century 8 and Century 6. They adopt
the famous Scan-speak top driver units, non resonant multiplechamber with low compression design, Italian craftwork rosewood
amber piano paint finish, 24K golden plated AVANCE logo and top
WBT pole terminals.
The essence
of audio is to revert
the origin sound.
AVANCE CENTURY 6 uses Scan-speak Revelator tweeters feature
many revolutionary designs of ring radiator, patented symmetrical
drive (SD-2) motor, patented phase plug and non resonant alu rear
chamber, and all these offer unrivalled performance: frequency
high up to 40Hz, distortion reducing, high sensitivity and power
compression. And the midrange and woofer also uses highly
praised patented symmetric drive (SD-1) concept with copper in
the magnet system invented by Scan-speak. The models adopt
WBT top nextgen™ pole terminals, which are made of pure copper
with 24 carat direct gold-plating (nickel-free) and feature low
tolerance contact element and fully insulated construction.
Through all perfect details from top to toe, AVANCE new Sound of
Century aims to carve every single note for music and to pursue
live music performance. Just like a classical piano set elegantly
there – any single item of the traditional rarefied craftworks, every
meticulous exquisite step, all these are meant to be realized for the
most refined art and live audio performance as we target at.
AVANCE INTERNATIONAL A/S
www.avance-audio.dk
www.avance.com.cn
AVANCE, Royal coronation
for
your life
© by WBT
11
Title story: The new models – Heavenly light & devilishly good
The new models:
Heavenly light & devilishly good!
Less is more - WBT nextgen™ products are convincing proof of this.
The new WBT-0703 and WBT-0708 nextgen™ pole terminals
preserve valuable resources of non-ferrous metals and conduct signals and sounds –
not however, rather exactly for this reason - better than any other before them.
nextgen™ WBT-0708 (left) and WBT-0703 (top) pole terminals
now also available in white (limited edition)!
12
With the new WBT-0703
and WBT-0708 nextgen™
pole terminals, we have
succeeded in offering the
standard-bearing nextgen™
technology at an extremely
attractive price. The new
models are nextgen™
through and through and
therefore provide faithful
signal transfer and an authentic sound experience.
The signal conductors of the
WBT-0703 and WBT-0708
nextgen™ pole terminals are
restricted to as low metal mass
as possible consisting of pure
copper or of fine silver.
In comparison with classic pole
terminals, nextgen™ pole terminals reduce the amount of metal
by a factor of 10.
This does not simply preserve
valuable resources,
but also eliminates losses
in sound
quality
owing to the
mass storage
effect. This effect
is unavoidable with
larger metal masses and has
a measurable influence on
signal flow.
The innovative geometry of the
conductors in the nextgen™
pole terminals also prevents
eddy currents effectively which
can affect the purity of the signal. eddy currents occur in the
form of nonlinear distortion and
cannot be corrected.
But the innovations by no
means stop here. The form of
the signal conductor doesn‘t
just act again the mass storage
effect and eddy currents, it has
also been optimised over the
course of complex tests and
calculations so that the new
nextgen™ pole terminals are
© by WBT
significantly more resistant than
conventional models to microvibrations through structureborne sound. This means that
nextgen™ pole terminals offer
an unrivalled level of transfer
safety and, in conjunction with
the WBT-0718 nextgen™ impact
sound interrupter, define the
boundaries of what is technically possible.
Another innovation is the
moment of force indicator integrated into the pole terminals.
This provides an acoustic signal
when there is sufficient contact pressure to the sandwich
spades. It is a popular misconception that signal transfer is
only at its optimum level if the
maximum possible contact
pressure is exerted on the contact surfaces.
If these surfaces are pressed
against each other too tightly,
parts of the surfaces can be
damaged beyond repair. The
problem is that the contact
surfaces are not completely
flat and, when damaged, the
surface structure can quickly
oxidise – find out more on
pages 26 – 27.
metal models – in fact, they are
far superior.
WBT-0703 and WBT-0708
nextgen™ pole terminals are
different in terms of form and
size, but the technology remains
the same. Both are compatible with speaker cables with
banana plugs (4mm) or sandwich spades as well as crimped
cable ends (up to 6mm²). For
connection to high-performance
cables, the WBT-0703 is an
ideal companion.
For design-conscious
owners of speakers with
white housing or with an
elegant white inlay, WBT
offers WBT-0703 and
WBT-0708 in the particularly
attractive „White Edition“.
With these elegant pole terminals, your speakers are best
equipped in every regard.
Of course, it goes without
saying that nextgen™ pole
terminals are completely insulated, IEC- and CE-compliant and
are manufactured exclusively in
Germany according to envi­ro­n­
mentally-friendly standards.
That being said, nextgen™ pole
terminals give you a free choice
as to contact pressure.
Alongside the signal conductor,
another decisive factors for
the quality and long lifespan of
the nextgen™ pole terminals
is the interaction between the
different materials. The images
provide an insight into the complex and sophisticated from of
each of the components made
form high-quality materials.
In terms of robustness,
nextgen™ pole terminals don‘t
play second fiddle to classic
13
Equipped with WBT: KEF
KEF
equipped with
WBT presents:
KEF Muon, Blade and Reference-Series
Your star sign is Leo and your blood group is adrenaline +
Before you‘ve even heard the first note the speakers make it
unequi­vocally clear what they are made for, they just want to play …
The pulse drivers by the exclusive British engineering company KEF
are revered by audiophiles around the world.
The company, which has stood for unconventional solutions for
more than 50 years, is well established in all sectors where top
performance matters.
KEF allows itself the luxury of a manufacturing base in Maidstone
in Great Britain for its state of the art products.
KEF, long established as a global player in the modern world, has
always had its development department in England and moved
production to China to also be able to serve the lower price cate­
gories in accordance with the KEF credo „top performance at a
moderate price“ and therefore delight a wider audience with the
KEF DNA.
However, for people with music in their blood, for whom the best
is just about good enough, KEF takes up a slower pace.
For British manufacturing products, such as Muon, Blade and the
Reference Series, developers are allowed to work without taking
into account costs and market conformity.
Internationally famous designers have been acquired for their
design, who adopt unconventional approaches together with our
audio engineers.
14
Manufacturing methods from the automotive and shipbuilding
industries are applied in the production process to overcome the
classic loudspeaker design.
But always under the premise that it helps the speakers to produce
a better sound, that no detail is ignored and current approaches
are questioned.
The speakers are assembled by trained specialist in our own
factory, where the principle always applies that an engineer takes
responsibility for one pair of speakers from start to finish (i.e. until
measuring and shipping) and vouches for this with their signature.
No machine can replace the specialist knowledge of a good
engi­neer, who breathes life into the speakers with their trained
eye. Only they know how to skilfully blend each part into a sound
sculpture.
It is almost self-evident that with this quality claim you must
inevitably come across WBT.
As this degree of dedication to development and love of detail is
positively reflected at WBT. After all, speaker connectors are the
only contact to the output system and insiders have known for a
long time how important these connections are.
We are all the more proud that our factory products are fully
equipped with WBT technology and play a part in our creations.
Blade – equipped with nextgen™
pole terminal WBT-0710 Ag
KEF
www.kef.com
© by WBT
15
nextgen™: Feel what you hear
Feel what you hear
The WBT-0718 impact sound interrupter is unique
and cutting-edge technology – a true nextgen™ product.
16
Often the smallest things
can have major, unexpected
consequences. This certainly
applies to the WBT-0718 impact
sound interrupter, as the small
component about the size of
your thumb made from modern
functional materials is ideally
placed in a speaker terminal.
Just as all other WBT developments, the benefits of the
impact sound interrupter lies
in the technical finesse and
unwavering spirit of innovation
behind the product.
Music generates sound and
therefore energy. In principle,
this is a good thing but if you
look more closely, there are
also problems, particularly
when it comes down to authen­
tic music rendering. When
music is played over a speaker
system, then the membranes
in each of the chassis move
in time with the music. This
stimulates the air around the
speakers, causing vibrations
and generating the desired
tones for us to hear.
However, what we don‘t want
when it comes to perfect
rendering is for the chassis
to stimulate the air inside the
speakers and to generate
energy there. Speaker manufacturers usually restrict this effect
by using insulation materials
inside the speakers. But no-one
has yet been able to completely
eliminate it. A proportion of the
energy generated in this manner
indirectly encroaches upon the
speaker housing and causes
tiny vibrations. You can experience this effect for yourself by
simply placing your hand on top
of the speaker when music is
playing. However, these vibra­
tions are not just caused by the
sound dispersed inwards by
the membranes. The chassis
are mechanically bonded with
the speaker body and therefore
© by WBT
transfer energy to the housing
directly – what is known as
structure-borne sound.
interfaces play a decisive role in
sound quality and that they have
been neglected up until now.
The major problem here is that,
as the housing vibrates, however minute these movements
may be, the connector field with
the pole terminals for the speaker cable vibrates too. These
are interfaces with an influence
on sound quality between the
pole terminals and the connected cables with their sandwich
spades or banana plugs. In
physical terms, this results in
an unstable contact surface.
As the contact surfaces are far
from completely flat (see article
on pages 26 - 27), the various
contact points between the pole
terminals and the speaker connectors are in constant contact
with one another which results
in a kind of stress situation at a
molecular level.
The WBT-0718 impact sound
interrupter is unique and a
pioneering technological development – a true nextgen™
product. Never listen to music
again without one.
This is where the WBT-0718
impact sound interrupter comes
into play. Its heterogeneous
construction consisting of a
variety of cushioning functional
materials isolates the connector
field from the actual speaker
housing and therefore prevents
any direct energy transfer
between speaker body and
contacts. The WBT-0718 impact
sound interrupter does indeed
„absorb“ this energy, but therefore also allows the system to
render sound quicker and more
directly. Fine details become
clearer, the overall structure of
the music becomes more stable
and the spatial arrange is easier
to locate. The impact sound interrupter does not represent an
extra component through which
the signal is processed rather it
ensures that a significantly-less
amount is lost at interfaces in
the transfer chain.
In many cases, the impact
sound interrupter can be retro­
fitted. Simply ask your WBT
specialist retailer.
Impact sound interrupter
WBT-0718 (Fig. similar)
Mounting plate equipped with WBT-0718
impact sound interrupter in black and
WBT-0703 nextgen™ pole terminals.
With this development, WBT
has once again shown that
17
WBT and Audio Physic: on the hunt for the sound killers
WBT and Audio Physic
– On the hunt for the sound killers –
WBT is setting new standards in the faithful
rendering of music in the form of the WBT-0718
impact sound interrupter. The mechanical effects
of impact sound (more on pages 16-17) affect the
purity of the electrical
transfer and therefore
the signal integrity in
the form of nonlinear
distortion.
One manufacturer who
has tackled this problem intensively is the internationally renowned speaker manufacturer Audio
Physic. „In mechanical terms, there‘s still a long
way to go when it comes to speaker technology,“
says Head of Development Manfred Diestertich.
„We must eliminate the potential of vibrations to
disrupt all elements.“
Audio Physic
Avantera Cross Section with
impact sound interrupter
Diestertich already went down this path many
years ago by finding another solution rather than
screwing the speaker chassis directly to the
speaker housing as is the case with many other
speaker manufacturers. Diestertich isolates the
speaker systems from the body of the speaker
using small neoprene cushions, which allow a
significant increase in the precision of the signal
reproduction. He has gone even further by isolating the connection terminals on the chassis
from the load-bearing cage using neoprene.
However, all this was merely the first step.
Fighting impact sound is a Herculean task in a
vibrating system. It is important to differentiate
between the places where the most impact
sound occurs in quantitative terms and those
where the impact sound is at its strongest
and therefore the most damaging to the
sound quality.
18
Places where the energy is at
its highest are also where the
load is high – in the bass range.
But the human ear is becoming
more and more insensitive
to nonlinear distortion at low
frequencies. We cannot even
differentiate harmonic distortion
from a pure signal in the bass
range.
But the picture is completely
different in the fundamental
and mid-tone range where the
human ear is enormously sensitive and as precise as the best
measuring devices. Millions of
years of evolution have given us
this gift which saved our lives in
ancient times when we needed
to identify and act on dangerous
sounds.
the tweeters are even isolated
using a clever string suspension
concept (SSC).
This way of thinking quickly makes sense when you realise that
mid-range and high frequencies
only require a very low membrane hub, even at higher volumes.
If the baffle board vibrates even
a little, this can cause disappearances or increases which can
affect the signal. A snapshot of
the situation can serve to clarify
this point: If the baffle board
moves a tenth of a millimetre
backwards stimulated by impact
sound, whilst the mid-range
unit moves forward at the same
time, some of the mid-range
energy is missing. This results in
distortion which, depending on
One box is placed inside the
box so that only the outer box is
connected to the baffle board,
using neoprene cushioning in
this case too. The inner box and
therefore the actual oscillation
system is flush-mounted to
the front of the speaker but
is not in contact with it. This
wonderfully clever trick means
that vibrations have to pass
through several interfaces to
have a disruptive effect on the
system. This means that they
lose a great degree of energy
and barely have a chance of
influencing the precision of the
music rendering – even if extremely loud bass tones predominate and the speaker housing
is visibly vibrating. The process
is complicated and the modern
chassis are costly. But that‘s
not stopping the manufacturer
from offering the pioneering
chassis technology in both of its
high-end product ranges.
Ultimately, Audio Physic will be
using the new nextgen™ pole
terminals from WBT, whose
clever conductor geometry also
represents a difficult obstacle
for impact sound, in all product
ranges in the future. All Audio
Physic speakers in the highend and reference ranges are
fitted with the WBT-0718 impact
sound interrupter as standard.
This is exactly why Diestertich‘s
attention was drawn to these
frequencies. In a speaker, the
mid-range unit and the tweeter
are responsible for rendering.
Engineering pioneer Diestertich
developed a brand new chassis
architecture which allows
almost complete mechanical
isolation from the assembly
plate – an area where impact
sound is particularly dangerous.
In top of the range models,
© by WBT
the power, can most probably
be clearly audible.
Diestertich found a way of
effectively isolating the actual
chassis from the front of the
speaker. His „Hyper Holographic Cone“ mid-range units and
tweeters consist of two boxes.
In turn, he manufactures the
individual chassis boxes from a
variety of materials: metal and
modern functional materials.
19
WBT production: Completely made in Germany
Completely made in Germany!
Made in Germany –
that‘s not simply some kind of empty promise for WBT, rather a mission statement
that the company has lived for over 25 years and an asset that is worth protecting.
The reasons are simple. Right from the start with the introduction of the legendary WBT-0100
RCA connector in 1985, the goal was always oriented towards manufacturing technically-innovative
but also simple and high-quality connectors. This requires an extraordinarily high level of series
stability and processing quality. We still believe the only way to guarantee this is with in-house
WBT manufacturing.
20
nextgen™ connectors are so-called compound assemblies,
which consist of several very different functional materials,
which only form a unit that works perfectly once combined.
This is where precise manufacturing and the craftsmanship
of our employees are a guarantee for consistent, first-class
quality.
How a WBT banana plug is made.
Two plastic parts and a signal conductor are being welded
here using ultrasound.
Even if high-quality classic
connectors are able to be
produced in low-wage countries
nowadays – many of which are
oriented towards WBT – production in Germany has always
been a decisive factor for us.
The standards are extremely
high in terms of production and
manufacture. Each of the tools
essential for the production
process is a masterpiece. They
must work to an accu­racy of
1/1000th of a millimetre, otherwise they simply aren‘t good
enough for WBT.
© by WBT
Dozens of tools are required to
pro­duce the range of WBT products and this alone explains
why this expertise is unique.
Modern connectors in the
nextgen™ series consist of very
different functional materials,
which only complement each
other perfectly when combined.
This is where precise manufacture and the craftsmanship of
our employees are a guarantee
for constant, first-class quality.
Pure copper or fine silver is
used as a signal conductor
in nextgen™ connectors. The
surrounding body consists of
modern functional materials.
Directly around the soldering
joint, for example, the base
body must cope with high temperatures and may not deform.
Conventional PVC is unsui­
table here. This also applies
to production. After the signal
conductors have been manufactured using the specialised
tool, they are deburred, cleaned
and then gold-plated (Cu parts)
21
WBT production: Completely made in Germany
Pure copper or fine silver is used as a signal conductor in nextgen™ connectors.
You can see the production process for the CE-compliant banana plugs with fine silver signal conductors above.
The surrounding body consists of modern functional materials.
This is crucial for production and durability.
A modern plastics injection moulding machine, specially set up for WBT tools.
22
You can see the plastic body for the WBT-0610 banana
plug being made here. You can only see one half of the
tool in the image. The special feature is the plastic body‘s
internal thread: after the injection moulding the mould
core that forms the thread must be screwed out through
two hydraulic cylinders.
directly without any nickel (!)
being used. Subsequently, the
conductors are put through a
complex coating process using
a functional material. Only when
the temperature and pressure
conditions are in perfect harmo­
ny does the base part comply
with the high standards we set
of nextgen™ connectors. With
nextgen™, what was previously
a simple turned part has been
transformed into a qualified
interface.
The conventional plastic parts
such as the clamping nut and
the plastic ring are also manufactured by a high-precision
extruder. This is no place for
standard plastics, as they
wouldn‘t be able to withstand
the mechanical loads on parts
such as the thread. The modern
nextgen™ connectors are also
superior to their metal-based
contemporaries in terms of
long-term robustness and
contact safety. In this respect,
it‘s just like the situation in the
automotive sector – namely that
modern, functional materials are
replacing heavy metal components on an increasing basis,
without having to compromise
on safety or quality. On the
contrary: nextgen™ connectors
set technological standards in
every respect and also preserve
valuable resources of nonferrous metals.
© by WBT
You see, decades of knowledge
and experience are invested in
WBT products. Such sophisticated products also attract the
envy of others who want to save
enormous development costs
and plagiarise our models,
albeit with negligible success.
Products, which definitely do
not meet WBT standards and
are certainly not manufactured
in an environmentally-friendly
manner.
Today we define cutting-edge
technology with nextgen™. We
dedicate all our expertise to
nextgen™. Which is one good
reason to protect ourselves
against counterfeit and imitation
products. This is the only way
to guarantee that our customers
receive what they are entitled
to, the best connectors in the
world. Therefore look out for the
WBT signet®. This small sticker,
which is also made of several
functional materials to secure
against forgery, guarantees that
you have a genuine „Made in
Germany“ WBT original in front
of you. Quality that you and your
hi-fi components deserve.
nextgen™ is a WBT development line and internationally patented.
WBT ® and nextgen™ are registered trademarks of WBT Germany.
WBT-signet™ is an internationally protected symbol of quality
and originality. Forgery-proof!
23
Equipped with WBT: Tannoy
Tannoy
equipped with
WBT presents:
World renowned loudspeakers
for musical perfection
Tannoy is one of the oldest and most prestigious audio brands
in the world. Founded in 1926 in the UK, cutting edge innovation
throughout its history has seen Tannoy loudspeakers define
whole generations of music reproduction in the home.
From 1920’s swing jazz recorded on rotating wax-discs to contemporary 192kHz / 24bit high resolution digital recordings, Tannoy
loudspeakers have been used by discerning audiophiles around
the world for over eight decades.
The company’s main factory and headquarters are located in
Coatbridge, near Glasgow in Scotland where all Tannoy products
are still conceived, designed and developed to this day. Tannoy’s
key technology for residential loudspeakers is the world-renowned
Dual Concentric™ driver. Placing the high-frequency tweeter at the
centre of the mid/bass cone delivers point source imaging, outstanding time coherence and class-leading musical involvement.
Tannoy’s reputation for audiophile music reproduction is born from
the unerring pursuit of excellence, from holistic overall design to
the smallest of details. Across Tannoy’s premium contemporary
loudspeaker ranges and its traditional high-end Prestige series,
every component is meticulously hand selected. From giant Alnico
magnets to the connection terminals, each part in the music reproduction system must deliver truly unparalleled performance.
To this day, discerning music and movie lovers all over the world
choose Tannoy‘s technically advanced home theatre and hi-fi
loudspeakers for their accuracy, dynamics and expansive imaging.
From compact AV systems to stylish, premium performance home
theatre and audiophile stereo speakers to custom install. Tannoy
leads the way.
24
Tannoy has exclusively used WBT binding post terminals for its
high-end and flagship residential loudspeakers for over 10 years.
Having auditioned a huge variety of terminal options from leading
suppliers over the past eight decades, WBT terminals are consis­
tently selected for their ability to deliver unsurpassed signal inte­
grity and outstanding mechanical security.
WBT-0780 terminals were first used by Tannoy on the formidable
Dimension series loudspeakers from 2001. This purist range of
audiophile loudspeakers featured art-deco inspired design and
class-leading articulation. The same terminals are used on the
current ultra-contemporary and multiple award winning Tannoy
Definition range.
WBT-0766 terminals are used on Tannoy’s unique Prestige range
and Tannoy’s flagship loudspeaker, the stunning Kingdom Royal.
Prestige models are very large loudspeakers featuring traditional
fine-wood cabinets and highest specification Dual Concentric
drivers. The range is famed for its breath-taking vocal accuracy,
startling dynamics and very wide image projection.
New for 2012, Tannoy is set to launch the Definition DC10A.
This fusion of Tannoy’s audiophile acoustic engineering and contemporary design features a massive Alnico magnet drive system,
pure silver wiring, Deep Cryogenically Treated components and
WBT-0703 nextgen™ terminals.
Tannoy
www.tannoy.com
© by WBT
25
Background: The true importance of surfaces at an interface
Nothing it what it seems.
The true importance of surfaces
at an interface.
We tend not to think about interfaces at all in our
daily lives. But our daily lives are determined by
interfaces to a significant extent and now more than
ever. But what exactly are interfaces?
WBT-0610 nextgen™ banana plug
and the decoupled signal conductor
made from pure copper (with no
surface gold-plating).
One example from our day-today lives explains why we barely
ever think about this subject. It‘s
getting dark – so we turn on the
light switch. This is an interface.
Even if we don‘t exactly use
force when turning on the light
switch, this process has worked
so reliably and correctly over
decades that we have come
to take it for granted. In the
aforementioned example, there
are only really two comprehensible possibilities. Electricity is
transferred and the light turns
on, or no electricity is transferred and the room stays dark.
There is no „in-between“ – well,
almost. One exception to this
rule which sheds light on the
key elements and problems of
contact surfaces is the state
Mircoscopic picture of the surface roughness
in the molecular area – „crater landscape“
Mircoscopic picture of the real structure of contact surfaces
metallically conducting surface
(pure copper molecule)
quasi-metallically conducting
surface with monomolecular
adsorption layer
carrying surface with
insulating impurity layer
Source: model presentation by Prof. W. Rieder, VDE, Berlin, Germany
Graphical presentation by WBT
26
known colloquially as „loose
contact“.
Although contact surfaces
should be in permanent contact
with one another, the truth is
that contact is never permanent.
Using the light switch as an example, the consequence would
be that the light bulb flickers as
no stable electricity supply can
be provided at the surfaces of
the interfaces. The example is
too simplistic, as our electricity
network is special and has
largely-fixed parameters. Within
the system, comparatively high
levels of current and voltages
are transferred at a frequency of
50 hertz. In applications where
electrical current is a million
times smaller but still has a
massive frequency range, things
get significantly more compli­
cated. In order to understand
this subject, it is better to
observe contact surfaces at
a microscopic, or better still a
„molecular“ level.
The pins on a power supply
plug appear flat to the naked
eye. If a WBT sandwich spade
is placed next to them, the
contacts appear even flatter, as
though they‘ve been polished.
So flat, in fact, that the surfaces
even reflect light. Even if we
touch the contacts, they still feel
flat. Fact is though, our sensual
perception is far too imprecise
to identify the true surface
characteristics. The surfaces of
contacts are actually rough and
similar to a cratered landscape
or to the bark of a tree (fig. 1).
If we remember that two such
surfaces have to meet one
another in order to generate a
contact, it becomes clear that
a large majority of the surface
does not actually come into
contact with anything. What
complicates this further is that
the profile is random and there
are also non-conductive areas.
Even if mechanical contact
takes place, the electricity does
not flow.
The signal is only transferred
at the tips of the craters which
are in occasional contact with
one another. In the case of
high voltage applications, this
doesn‘t represent a problem –
in these cases, depending
on the strength, an electrical
connection can be made even
if two contacts aren‘t actually
physically touching each other.
However, with low currents such
as those transferred with elec­
tronic components, the contact
safety and therefore the signal
integrity is affected. This is a
physical fact.
Things become more critical if
the contacts are not static – in
other words not in a state of
absolute rest. In the world of
high fidelity, all components are
subjected to micro-vibrations
such as those caused by
2
1
2.1
| 1 | Surface structure of a round copper contact in a 150x magnification
| 2 | SEM- (scanning electron microscope) image of the contact pin of a banana plug
| 2.1 | Extract of a SEM-image of the banana plug surface with clearly visible “crater landscapes”
network hub of a transformer
or by vibrations transferred
through the speaker housing
when music is being played.
These vibrations are propagated
like parasites via housing and
structural elements as so-called
„impact sound“ and affect the
interfaces.
This means that all contacts,
irrespective of whether they‘re
RCA connectors or sockets or
speaker connectors and pole
terminals, are in constant movement. This includes the contacts that are responsible for
signal transfer. The movement
is not stable either. Fluctuations
occur in the quality of the signal
as a result of impact sound.
Figuratively speaking, this is a
constant loose contact which
does not lead to total failure, but
does affect the quality of the
signal.
Physicists and engineers are
aware of this phenomenon.
In the hi-fi world, however, this
problem is only just starting
to be recognised by manufac­
tu­rers. As a pioneer in the industry, WBT sees guaranteeing
perfect signal transfer using
innovative products as a
challenge to be overcome.
Physically bonding the contacts
with each ultra-tightly, in other
words welding them together,
is not the right solution. On the
© by WBT
contrary, in fact: If the contact
surfaces, which are raw rather
than flat and even, are pressed
together with force, then they
become damaged at a molecular level and oxidation can
quickly occur. Oxidised surfaces are no longer conductive.
This is the reason why the contact pressure can be adapted
with our RCA connectors using
the adapter sleeves and with
our banana plugs by means of
the adjustable pins.
The new nextgen™ pole
terminals also contain innovative technology to take these
physical findings into consideration. Our new nextgen™ pole
terminals are equipped with a
moment of force indicator which
provides an audible signal when
sufficient contact pressure
has been achieved. This way,
WBT nextgen™ pole terminals
prevent damage to the surface.
For the first time ever, the signal
conductors have been optimised and are significantly lesssusceptible to impact sound
than conventional pole terminals. nextgen™ pole terminals
ensure a permanently-stable
connection and therefore exact
signal transfer. They are the only
pole terminals in the world to do
so and underline the innovativeness of our company.
The WBT-0718 impact sound
interrupter, which isolates
the connection terminals in
a speaker from the speaker
body, is just as innovative.
With this component in place,
micro-­vibrations have barely
any chance of being able to
propagate themselves to the
contact surfaces and affect the
transfer of the fine signals (more
information on pages 16 - 17).
With the pioneering WBTnextgen™ products, highquality components are always
one step ahead. More and more
manufacturers are recognising
this too and turning to WBT
nextgen™. As an example, the
renowned speaker manufac­
turer Audio Physic uses
nextgen™ pole terminals in all
of its product ranges.
More in-depth information
on the functions of the
WBT-0718 impact sound
interrupter on pages
16 - 17.
(Fig. similar)
27
The innovative product series by WBT.
It all started with a vision. The vision to travel to the moon, the vision of authentic sound.
Research leads to unforeseeable possibilities. And development allows us to visit new worlds.
Rockets are sent into space, man walks on the moon, probes are sent to Mars –
and WBT nextgen™ defines new standards for true high-end quality worldwide.
■■••1961
The first human being travels into space
The first humans land on the moon
■■••1981
Space Shuttle Columbia is sent on its debut mission
■■••1985 WBT is founded and the classic series is born
■■••1986 W BT brings the first WBT-0200 RCA connector onto the market.
The base module of the MIR space station is sent into Earth orbit
■■••1988WBT develops the first RCA connector with crimping technology
The first Discovery mission starts
■■••1989WBT develops the WBT-0730 pole terminal
From 5th September, at least 1 person is in space for the next 3,644 days
■■••1995 A space shuttle docks at the MIR space station for the first time
■■••1996 WBT presents the WBT-0147 RCA connector
■■••1998 W BT presents the first sandwich spade
The construction for the ISS begins with the Russian Sarja module
■■••1969
WBT launches the nextgen™ series with the WBT-0110 RCA connector and the WBT-0210 RCA socket
The first Chinese space travel starts with the Shenzhou 5 mission
■■••2005 WBT expands its nextgen™ series with the WBT-0710 pole terminal
■■••2007 China launches its first lunar probe
■■••2008 W BT presents the WBT-0610 nextgen™ banana plug
India launches its first lunar mission
■■••2010
The ISS replaces the MIR space station as the spacecraft with the longest period of human occupation
■■••2011WBT presents the new WBT-0703 and WBT-0708 pole terminals – Pure, unadulterated nextgen™!
The ISS is expanded with the AMS project
■■••2003
■■••2012
W BT launches the WBT-0114 nextgen™ RCA connector as the successor to the classic WBT-0144 model.
Presentation of the WBT-0703 and WBT-0708 nextgen™ pole terminals in white (limited edition!)
An overview of all current WBT products can be found on the following pages.
nextgen™ is a WBT development line and internationally patented.
WBT® and nextgen™ are registered trademarks of WBT Germany.
WBT-signet™ is an internationally protected symbol of quality and originality.
Forgery-proof!
WBT products
nextgen™
RCA CONNECTORS Pages 30 - 31
nextgen™
SPEAKER CONNECTORS Pages 32 - 33
classic
CONNECTORS Pages 34 - 36
Finishing Touches Pages 37 - 38
WBT products: RCA connectors // nextgen™ // RCA plugs
RCA plugs in nextgen™ quality
nextgen™ is completely different.
The nextgen™ principle is the
first technique which allows
pure copper or fine silver to
be used as signal conductors
without compromising on
robustness and the long-term
behaviour of the connectors.
nextgen™ characteristics
construction of
functional materials
■■••production tooling
from own development
■■••fully-automatic production
by WBT special tooling
■■••(thereby) perfect workmanship
and series constancy
■■••made in Germany
■■••signal conductors well adapted to the
cable cross section made of pure Cu / Ag
■■••defined contact surface by pressure
achieved through moderate force
■■••no eddy current distortion
■■••free from mass storage effects
■■••new electrical and mechanical
vibration control
■■••resource-saving conception
■■••environmentally friendly production
■■••IEC and CE compliant
The core of the WBT-development is a central contact unit which consists
of pure copper signal conductor the mass of which has been reduced
to the minimum. The direct 24 carat gold-plating is nickel-free, therefore nonmagnetic. Signal conductors made from silver are passivated for the purpose
of oxidation protection. The contact pressure is assured by means of WBT
collet chucking device, and the cable strain relief guaranteed in form of the
well-proven Torx screws.
Characteristics
nextgen™ RCA plugs:
■■••ultimate conductivity through
pure copper or fine silver conductors
■■••24 carat direct gold-plated
(or passivated), nickel-free
■■••with patented WBT clamping device
■■••reliable cable strain relief
■■••hybrid
WBT-0110
The WBT-0110 RCA connector
is particularly recommended for
digital connection (DACs, CD
players, etc.) as it provides a
continuously-adjusted connection thanks to its 75 ohms and
up to 1GHz impedance.
(RCA plugs generally have a
characteristic impedance of
15–20 ohm!)
nextgen™
WBT-0110 Cu
WBT-0114
The RCA connector for digital
and analogue connections
(75 ohms up to 400MHz).
The brass sleeve connected
to the minus contact provides
optimum shielding.
nextgen™
WBT-0114 Cu
nextgen™
WBT-0102 Cu
nextgen™
WBT-0152 Cu
WBT-0102 | WBT-0152
For phono outputs (record players, microphones, etc.) good
shielding against interference
fields is particularly important.
This is provided by the WBT0102 that features the brass
sleeve of higher conductivity
connected to the minus pole –
but otherwise is all nextgen™.
(75 ohms up to 200MHz)
Int. Pat. 10258689
30
WBT products: RCA connectors // nextgen™ // RCA sockets
WBT-0210
The changeover to the nextgen™
principle enables the RCA sockets
(as with WBT-0110!) to be set to an
impedance of 75 ohm (typ.), as required
for digital connections in particular.
Yet also analog data benefit from
the enormous bandwidth.
nextgen™
WBT-0210 Cu
Int. Pat. 0460145
Tip:
■■••The nextgen™ RCA connectors
are also able to be fitted with the
WBT-0718 impact sound interrupter.
Characteristics
nextgen™ RCA sockets:
■■••maximum conductivity
thanks to pure copper or fine silver
conductors for + and ■■••transmission bandwidth of 1 GHz (!)
■■••inner contact designed as
tulip contact with spring ring
■■••outer contact in the form of
a patented double wave contact
■■••75 ohm (typ.) characteristic impedance
■■••delivered with a set of insulating washers
■■••applicable for every wall thickness
Impact sound
interrupter WBT-0718 |1|
(Fig. similar)
■■••for
decoupling of impact
sound in loudspeakers
and electronic equipment
(line frequency)
■■••for all WBT pole terminals
and RCA sockets
|1| Int. Pat. pend. 202010002
OVERVIEW
nextgen™ RCA plugs
Product
Signal conductor
material
Soldering
For cable
up to (mm2)
With nextgen™
technology
Direct
gold-plating
Nickel-free
WBT-0110 Ag
Ag
x
9
x
x
WBT-0110 Cu
Cu
x
9
x
x
WBT-0114 Ag
Ag
x
9
x
x
WBT-0114 Cu
Cu
x
9
x
x
WBT-0102 Ag
Ag
x
9
x
x
WBT-0102 Cu
Cu
x
9
x
x
WBT-0152 Ag
Ag
x
10,8
x
x
WBT-0152 Cu
Cu
x
10,8
x
x
Passivated
x
Sleeve material
Alu
x
Alu
x
Ms
x
Ms
x
Ms
x
Ms
x
Ms
x
Ms
nextgen™ RCA connectors
Product
Signal conductor
material
75 Ω
impedance
Soldering
Chassis
assembly
Board assembly
(horizontal)
Nickel-free
WBT-0210 Ag
Ag
x
x
x
x
WBT-0210 Cu
Cu
x
x
x
x
Goldplated
Platinated /
Passivated
Direct
gold-plating
x
x
Signal conductor material: Ag = fine silver, Cu = pure copper | Sleeve material: Alu = aluminium, Ms = brass
© by WBT
31
WBT products: Speaker connectors // nextgen™ // Banana plugs, Sandwich spades
Speaker connectors in nextgen™ quality
Characteristics
nextgen™ banana plugs
and sandwich spades:
nextgen™
WBT-0681 Cu
■■••signal
conductor made from
pure copper or fine silver
■■••mass-reduced nextgen™ principle
■■••24 carat direct gold-plating
(nickel-free)
■■••contacts through crimping
■■••IEC and CE compliant
■■••smart cable guiding through
the angled design
WBT-0610
■■••secured with a central pin
WBT-0661 / 0681
fork with
integrated vibration absorber
■■••WBT-0661 with 6 mm fork width
■■••WBT-0681 with 8 mm fork width
■■••contact
nextgen™
WBT-0610 Cu
nextgen™
WBT-0661 Cu
WBT-0610
The nextgen™ banana plug
WBT-0610 feature high conductivity and is free of magnetic
interference. The contact pin
“bellies” when the spindle is
screwed in – for a constantly
high contact pressure with
constant low transition resistances.
WBT-0661 / 0681
The key to quality inherent
in these sandwich spades is
the patented design of their
contact forks. An elastomer
between the signal conductor
and non-magnetic steel cap
provides a constantly high
contact pressure. Transition
resistances are minimized
and vibrations successfully
absorbed.
Int. Pat. 09707444
Int. Pat. 1066660 | US Pat. 6319.078
WBT products: Loudspeaker connectors // nextgen™ // Pole termimals
nextgen™ pole terminals
for excellent signal and contact quality
nextgen™ pole terminals provide a great
potential for connecting your loudspeaker
cables and accept banana plugs, spades,
and crimped cable ends. Inside, cables
can be soldered, crimped, or even screwed
directly to the crossover. The assembly
is always insulated and secured perfectly
against twisting.
Where sound quality is concerned,
nextgen™ pole terminals will satisfy even
the most fastidious of audiophiles
(see fig. on right-hand side).
The minimized metal masses are one of the
basic principles of nextgen™: Only signal
conductors that are as thin as possible
help to eliminate eddy currents* and mass
storage effects*.
A perfectly-formed signal conductor is
placed in fibreglass- and mineral-reinforced
plastic housing. Naturally made of pure
copper in a minimalistic design.
* More basic and background details on eddy currents
and mass storage effects can be found in the WBT
technical articles at www.wbt.de.
Impact sound
interrupter WBT-0718 |1|
(Fig. similar)
■■••for
decoupling of impact
sound in loudspeakers
and electronic equipment
(line frequency)
■■••for all WBT pole terminals
and RCA sockets
|1| Int. Pat. pend. 202010002
32
WBT products: Speaker connectors // nextgen™ // Pole termimals
The nextgen™ pole terminals in 4 versions
All-metal look and haptics:
The signal/contact quality is exactly the same in
case of all 4 terminal types. The pole terminals
differ only in their design.
nextgen™
WBT-0705 Cu
Characteristics
nextgen™ pole terminals:
■■••signal conductors well adapted to the cable cross
section made of pure Cu / Ag
■■••defined contact surface by pressure
achieved through moderate force
■■••free from mass storage effects
■■••wideband capable
■■••new electrical and mechanical vibration control
■■••resource-saving conception
■■••environmentally friendly production
■■••IEC and CE compliant
■■••24 carat direct gold-plating (nickel-free)
■■••accepts banana plugs, spades, crimped cable ends
(6 mm2 /11 AWG)
■■••for soldering or flat push-on cable shoes
■■••twist-proof mounting
nextgen™
WBT-0710 Cu
Piano lacquer appearance:
nextgen™
WBT-0703 Cu
nextgen™
WBT-0708 Cu
Int. Pat. 1470620 | Int. Pat. pend. 102011007940
OVERVIEW
nextgen™ Banana plugs, Sandwich spades
Signal conductor
material
IEC/CE compliant (insulated)
Crimping
For cable
up to (mm2)
Nickel-free
WBT-0610 Ag
Ag
x
x
10
x
WBT-0610 Cu
Cu
x
x
10
x
WBT-0661 Ag
Ag
x
x
10
x
WBT-0661 Cu
Cu
x
x
10
x
WBT-0681 Ag
Ag
x
x
10
x
WBT-0681 Cu
Cu
x
x
10
x
Product
Direct gold-plating
Platinated
x
x
x
x
x
x
nextgen™ Pole terminals
Signal conductor
material
IEC/CE compliant
(insulated)
Nickel-free
WBT-0705 Ag
Ag
x
x
WBT-0705 Cu
Cu
x
x
Product
Direct gold-plating
Platinated
x
x
WBT-0710 Ag
Ag
x
x
WBT-0710 Cu
Cu
x
x
x
x
WBT-0710 Cu mC
Cu
x
x
x
WBT-0703 Ag
Ag
x
x
WBT-0703 Cu
Cu
x
x
WBT-0708 Ag
Ag
x
x
WBT-0708 Cu
Cu
x
x
x
x
x
x
Signal conductor material: Ag = fine silver, Cu = pure copper
IEC = touch-proof insulation and approved for currents > 34.5 V | CE = suitable for use in A/V systems
CE = suitable for use in A/V systems; safety pin for child protection (preventing unintended connection to a mains socket)
© by WBT
33
WBT products: RCA connectors // classic // RCA connectors
WBT classic
The classic series
stands out because of
its solid mechanics,
maximum clamping force,
particu­larly-convenient
installation and the highest
processing quality.
The solid, one-piece signal
conductors are precision
turned parts made in
Germany. They consist
of a brass material with
a high copper content
with high conductivity.
Characteristics
classic RCA sockets
■■••delivered with a set of insulating washers
■■••applicable for every wall thickness
classic Board versions:
Established clamping
and spring mechanisms
in the classic series guarantee the best possible
contact quality.
classic
WBT-0234
Thanks to the goldplated surfaces on all
contact elements, there
is sufficient protection
against corrosion.
classic Board versions
WBT-0234
classic Housing versions:
classic Housing versions
WBT-0201 | WBT-0244
■■••active
classic
WBT-0201
classic
WBT-0244
34
spring internal socket
for secure contact
■■••24 carat gold-plating
■■••insulated, twist-proof installation
■■••adjustable mounting distance
to the board
■■••heat-resistant Teflon dielectric
WBT products: Speaker connectors // classic // Banana plugs
Characteristics
classic banana plugs
■■••locking
bananas with expandable contact pin
double Torx screw system
■■••24 carat gold-plating
■■••perfect strain relief
■■••WBT
WBT-0600 | WBT-0644
crimping or soldering
■■••easy to assemble
■■••WBT-0644 has less copper proportion,
but otherwise is identical to WBT-0600
■■••for
classic
WBT-0600*
classic
WBT-0644*
WBT-0645
crimping
■■••space-saving and cable-friendly
■■••stackable
■■••IEC an CE compliant
■■••for
classic
WBT-0645*
OVERVIEW
classic RCA sockets
Product
Signal conductor
material
Soldering
WBT-0234
Cu Zn
x
WBT-0201
Cu Zn
x
x
WBT-0244
Cu ZN
x
x
Chassis
assembly
Board assembly
(horizontal)
Nickel-free
Gold-plated
x
x
x
x
x
x
classic Banana plugs
Product
Signal conductor IEC/CE compliant
material
(insulated)
Suitable for
Bi-Wiring
Soldering
Crimping
For cable up to
(mm2)
Nickel-free
Gold-plated
x
x
WBT-0600*
Cu Zn
x
x
10
WBT-0644*
Cu Zn
x
x
10
x
WBT-0645*
Cu Zn
x
10
x
x
x
* Discontinued model
Signal conductor material: Cu Zn = copper / zinc
IEC = touch-proof insulation and approved for currents > 34.5 V | CE = suitable for use in A/V systems
CE = suitable for use in A/V systems; safety pin for child protection (preventing unintended connection to a mains socket)
© by WBT
35
WBT products: Speaker connectors // classic // Pole terminals
Characteristics
classic pole terminals
■■••puzzle plate system
■■••twist-proof mounting
WBT-0763 | WBT-0765
WBT-0766
■■••extremely high contact pressure
through fine pitch thread and crossmilled surface
■■••soldering or crimping, screw-on pcb
connection in case of WBT-0766
■■••made from brass, gold-plated
classic
WBT-0763
classic
WBT-0765
classic
WBT-0766
WBT-0702
or crimping
(with a Torx screw) connection
■■••high conductive copper alloy
■■••24 carat direct gold-plating
(nickel-free)
■■••soldering
WBT-0730 | WBT-0735
high contact pressure
through fine pitch thread and crossmilled surface
■■••soldering or crimping
(with a Torx screw) connection
■■••high conductive copper alloy
■■••24 carat direct gold-plating
(nickel-free)
■■••extremely
classic
WBT-0702.12
classic
WBT-0735
classic
WBT-0730.12
OVERVIEW
classic Pole terminals
Product
WBT-0763
Signal conductor
material
CE compliant
(insulated)
Nickel-free
Cu Zn
Gold-plated
Direct gold-plating
WBT-0765
Cu Zn
x
x
Cu Zn
x
x
WBT-0702.01
Cu Zn
x
WBT-0702.11
Cu Zn
x
WBT-0702.12
Cu Zn
x
x
x
WBT-0730.01
Cu Zn
x
x
Cu Zn
x
x
WBT-0730.12
Cu Zn
WBT-0735
Cu Zn
x
x
x
x
x
WBT-0730.11
36
Polished surface
x
WBT-0766
Signal conductor material: Cu Zn = copper / zinc
CE = suitable for use in A/V systems
Direct
Platinum-plating
x
x
x
x
x
WBT products: Finishing touches
Finishing touches
The range of accessories rounds off the WBT connector range.
Each individual tool is carefully designed and makes the assembly
and installation of WBT connectors as pleasant and effortless
as possible.
The use of high-quality tools and the processing materials ensures
that the full potential of WBT products is exhausted.
Crimping set WBT-0411
the crimping pliers
WBT-0403 and cable end sleeves
from 0.5-10 mm2 (20-7 AWG)
■■••delivered in a handy plastic case
■■••includes
Crimping pliers WBT-0403
for crimping of cable end sleeves
from 0.5-16 mm2 (20-5 AWG) for WBT
crimping plugs
■■••comfortable grip zones
■■••gold-plated
■■••ideal
Torque controlled Dynakey
WBT-0481
■■••high-precision tool
■■••factory-set to 5 dNm for perfect mounting of all WBT plugs
■■••fitted as standard with a Torx T.6
■■••bit for WBT mounting
Dynakey set WBT-0490
the torque controlled
Dynakey WBT-0481 and the bit assortment
WBT-0484 with 18 top-grade 4 mm bits
■■••delivered in a handy plastic case
■■••includes
© by WBT
Bit set WBT-0484
■■••18 pieces set with top-grade 4 mm bits
made from hardened chrome vanadium
steel for WBT-0481
Cable end sleeves with and
without insulation collar
■■••made from pure copper,
24 carat gold-plated, nickel-free
■■••with and without insulation collar,
available in the standard sizes from
0.5-16 mm2 (20-5 AWG)
■■••also available in fine silver, passivated
Angled Torx WBT-0488
Torx T.6 screw driver
■■••small
Silver solder WBT-0800/0805
■■••high quality solder with 4% fine silver content
■■••WBT-0800 melting temperature 178°/180° C
■■••WBT-0805 (lead-free!)
melting temperature 216°/219° C
37
WBT products: Finishing touches
WBT mounting plates have been designed for a professional installation of all WBT pole terminals.
They can be installed on the panel front or countersunk.
Their stability is good enough to accept the crossover to be mounted directly on the rear side of the plates.
The power bridges have been designed quite in the sense of the nextgen™ technology for bridging of bi-wiring
terminals. The conductor material is pure copper or fine silver which provides these power bridges the highest
degree of conductivity. In addition, they feature an intermediate elastomer for absorbing vibrations.
... and of course all mounting plates are available with a slot hole for the impact sound interrupter.
Characteristics
All WBT mounting plates are of
course equipped with the neces
sary accessory parts:
■■••screws
■■••wood
press-in nuts (brass)
rubber seal
■■••cabinet production drawing
■■••assembly drawing
■■••available also with slot hole
■■••cellular
Power bridge WBT-0725
nextgen™ style
■■••made from pure copper or fine silver
■■••equipped with elastomer
as vibration damper
■■••fully insulated, IEC and CE conformable
■■••easy handling
■■••in
for single-wiring
WBT-0530
■■••110 x 110 mm
for bi-wiring
WBT-0531
■■••110 x 150 mm
for single-wiring
WBT-0530 (Fig. similar)
■■••110 x 110 mm
■■••with elongated press cut and
WBT-0718 impact sound interrupter
|1| Int. Pat. pend. 202010002
IEC = touch-proof insulation and approved for currents > 34.5 V
CE = suitable for use in A/V systems
38
for bi-wiring XL
WBT-0532
■■••127 x 178 mm
Impact sound interrupter
WBT-0718 |1| (Fig. similar)
■■••for decoupling of impact sound in
loudspeakers and electronic equipment
(line frequency)
■■••for all WBT pole terminals
and RCA sockets
WBT provides special slot hole punches for retrofits.
Imprint
Editor:
WBT (Responsible in terms
of the (German) media law)
Im Teelbruch 103
45219 Essen, Germany
Phone:+49 2054 87 552-0
Mail: [email protected]
www.wbt.de
Editorial cooperation:
Kommunikation & PR
Knut Isberner
81539 München, Germany
Tel.: +49 89-18912258
www.knut-isberner.de
Conception / Layout, Design:
PPR. personality partner
Gesellschaft für markt­orientierte
Werbung mbH
Grasstraße 13
45356 Essen, Germany
Phone:+49 201 59 21 7-0
Mail: [email protected]
www.ppr-essen.de
Print:
L‘ Atelier Werbedruck GmbH
www.atelier-froehlich.de
39
WBT-Magazin · 3. Edition
WBT · Germany
Im Teelbruch 103 · 45219 Essen
Fon: +49 (0) 2054 87 552-50
www.wbt.de · [email protected]
The Art of Connection
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