Bowers and Wilkins Nautilus Owners manual

Nautilus owner’s manual

The Nautilus loudspeakers you have invested
in are an exact match of the first production
loudspeakers. Hand-built and tested, serial
marked and packaged individually, the
refusal to compromise at any stage from
concept to reality is a hallmark quality of
Nautilus.
And your guarantee of absolute satisfaction.

Loudspeaker B

Bass driver

Lower midrange driver

Upper midrange driver

High frequency driver

Crossover B

Loudspeaker A

Bass driver

Lower midrange driver

Upper midrange driver

High frequency driver

Crossover A

Line Insp.

Tester

Packer

Random Insp.

Quality Control

Introduction....................................................................5

Enclosure ........................................................................6

Drive units ......................................................................7

Crossover........................................................................7

Unpacking......................................................................8

Positioning......................................................................9

Installation......................................................................9

Cable connection....................................................10

Fine tuning ..................................................................11

Aftercare

......................................................................12

Specification

..............................................................12

Safety instructions ..................................................13

Contents

B&W monitors are widely considered to
be the benchmark in music reproduction
by professional musicians and audiophiles
alike. The Matrix #801 has become the
industry standard monitor in recording
studios around the world, and it would be
easy to rest on our development laurels.

However, the team of audio scientists
at B&W’s Research Laboratories at Steyning
are perfectionists. For them, there are
always areas which could be improved
upon or refined.

Company founder, John Bowers, was
an exemplar of the type. For him, the most
glaring compromise in loudspeaker design
lay in the cabinet. The standard rectan­gular enclosure only partially achieves its
goal of absorbing the rear radiation from
the drive unit.

Worse, it contributes resonances and
reflections from the inside, and diffraction
and reflection from the outside.

The B&W breakthrough of Matrix
cabinet construction offered a significant
improvement to the panel stiffness of the
rectangular box, but ultimately, the
solution, John felt, was to remove the
cabinet completely and create a dipole
source. Sadly, time and ill-health
intervened to prevent John Bowers from
exploring this avenue of research further.

Custody of this work was passed to
Matrix inventor and top acoustic designer,
Laurence Dickie, with an enviable record
of transducer and cabinet problem solving.
Laurence had been experimenting with
drivers mounted in the curved surface
of a cylinder and encountered results
not dissimilar to those of the dipole.

Namely, that external cabinet effects
could be virtually eliminated and the
intrinsic sound of the unit heard.

He used a ring magnet outside the coil with
a thin-walled cylindrical pole piece to allow
a smooth transition from dome to enclosure.
Only one type of enclosure will provide
absolute freedom from aberration – the
infinite pipe or waveguide.

Excitingly, it became possible to
imagine that an entirely waveguide-based
system could actually work. Research
showed that the exponentially tapered pipe
was an even better absorber than the cylin­der. So complete was its absorbing action
that the pipe could be left open or closed.

This was the breakthrough.

Thereafter,
the usual disciplines of the acoustic
engineer’s art came into play. Juggling the
variables of driver diameter, dispersion,
break-up, excursion, practicality, and of
course, economics.

It was decided that the system should
be four-way with 300mm (12in), 100mm
(4in), 50mm (2in) and 25mm (1in) units
– all mounted in tapered lines within a
diffraction limiting enclosure.

The enclosure evolved from the original
cylinder into the sleek rolling vent design
you have purchased. The massive rolling
vent disposes of rear bass driver radiation,
whilst the exponential line loaded
transmissions effectively deal with internal
reflection and external diffraction at mid
and high frequencies.

The drive for sonic purity is reinforced
by using an active crossover design
allowing separate amplification of each
drive unit, cutting out component crosstalk
and driver inter-reaction. Overall, the
elimination of straight lines defeats
diffraction and helps achieve virtually
transparent music reproduction.

What results is arguably the most
musical loudspeaker ever made.

Introduction

Exponential line loading is used for all four
drive units, primarily to achieve freedom from
resonance and reflection, but also for the
damping effect on the fundamental resonance
in the low frequencies.

The two dome units are tightly coupled
to their respective wave guides via a
hollow pole magnet which causes minimal
discontinuity to the advancing wave front.

A

hollow

pole magnet is also to be
found behind the lower mid diaphragm
supported by a chassis which itself forms
the first 50mm of the wave guide. The tube
to which this is attached is shaped to
smooth the transition from the chassis.

The distinctive natural appearance
of Nautilus is derived from the best
compromise of folding a tapered tube to
save space whilst maintaining the highest
curvature-to-width ratio. Traditionally,
folded pipes have involved many 180°
bends which have serious frequency
dependent transmission properties.

10mm thick Glass Reinforced Plastic (GRP)
has been used for the exterior surface which,
when coupled with the doubly cur ved shape,
results in an extremely stiff enclosure.
The inner turns of the spiral are bounded by
a foam filled GRP which braces the opposite
faces of the snail in a manner similar to the
Matrix type enclosure perfected by B&W.

The external form of the Nautilus has
been achieved using a blend of hand-built
forming and advanced CAD technology
borrowed from the automotive industry.
This enables B&W to maintain
mathematical accuracy of the wave guide
and to produce the final mould tool to sub­millimetric accuracy.

The high gloss surface finish is the
result of using a two-part acrylic paint
with a deep lacquer coat for lustre and
durability. A 50kg block of polished
terrazzo type material supports the
complete mollusc.

Enclosure

Each drive unit has been developed to operate
as a piston within its intended frequency band,
with two octaves between the upper roll-off
and the first sign of break-up modes. Extensive
use of aluminium in the diaphragms makes this
possible. All voice coils are wound on polyimide
formers to eliminate eddy-current losses which
are particularly serious at high frequencies.

A 9.5kg (21lbs) magnet with a 100mm
(4in) voice coil acts as the massive motor of
the 300mm(12in) bass unit. This, whenused
in

the exponential line enclosure, results in a
high-pass behaviour so over-damped that
the traditional second-order characteristic is
replaced by two distinct first-order slopes
and no stored energy.

A 250 micron one-piece aluminium
cone/centre dome ensures coherent motion
to beyond 1.5kHz. From 220Hz to 880Hz, a
100mm flat-fronted unit is employed to prevent
the gentle cavity resonance found in conven­tional cone units at around 2kHz interfering
with the output from the upper midrange unit.
A rare earth magnet assembly with hollow
pole is used to minimise the obstruction to the
rear radiation from the diaphragm.

Two domed units of anodised aluminium
of similar construction, 50mm and 25mm
in diameter, handle the 880Hz-3.5kHz
and 3.5kHz-25kHz ranges respectively.
All drive units are completely mounted on
silicone rubber O-rings to decouple them
from the cabinet.

Drive units

Crossover

IMPORTANT: YOUR DEALER
MUST CHECK THAT THE SERIAL
NUMBER LOCATED AT THE REAR
OF EACH CROSSOVER UNIT
MATCHES THAT OF THE LOUD­SPEAKER – AND THAT THE
STATED VOLTAGE IS CORRECT
FOR YOUR MAINS SUPPLY.

The division of the signal into the four
required bandwidths is accomplished in the
Nautilus Active Crossover via totally non­resonant circuitry. Simple 1st Order networks
correct the driver responses. Both inputs and
outputs offer single and balanced operation,
the latter being particularly useful in noisy
electrical environments, although a slight

subjective improvement has been observed
when using balanced signal interconnections
at every stage.

With suitable pre- and power
amplifiers, one unit is required for each
loudspeaker and should be sited close to
the power amplifiers. A power supply
connection for each crossover is required.

You should never lift the Nautilus by any
of its tubes.

Lift Nautilus from the crate and position
over the plinth. One person should support
the weight of the speaker holding the
threaded spigot whilst pulling the harness
through the cutout in the plinth.

Gradually, the speaker can be lowered into
the dished plinth, with the spigot fitting in
the slot.

Thread the rubber washer followed by the
metal washer and finally the securing nut
over the harness end and up to the base
of the plinth. Lean the loudspeaker for ward.
Screw the nut over the threaded spigot and
tighten by hand only.

The loudspeaker should now be moved
carefully to the final listening location.

Press the release catch on the buckle of the
strap holding the Nautilus’s front cover in
place. Remove the strap and the front cover.

The front cover performs two important
functions. First, it holds the drive unit
assemblies in the cabinet during transit.
Second, it protects the delicate domes,
diaphragms and cones.

Note: Great care must be taken to ensure
that the detachable tweeter cap is not
removed during this process.

WARNING: Nautilus produces a static
magnetic field that extends outside the
cabinet boundary. As such it should not
be placed within 1m (40in) of equipment
that may be affected by such a field, e.g.
Cathode Ray Tubes in TVs and Personal
Computers.

We suggest you retain the packaging for
future use, in particular the front protective
cover and retaining strap.

A pair of Nautilus is supplied in 3 crates. Each large crate
contains 1 Nautilus loudspeaker, 1 active crossover unit and one of
the crates is marked as and contains the accessory pack. The small
crate contains two stone bases. The bases should be unpacked first
as these are needed to support the Nautilus.

Unpacking

Unscrew all the screws holding the small
crate lid in place. Remove the lid and
the card separator. Insert one hand into
the slot on the plinth and raise one end.
Two people should lift each plinth as
each one weighs approximately 50 Kg.

Lift the plinth from the crate and place
it in or as near as possible to its final
working position. Repeat the operation
for the second plinth.

You should position the Nautilus crate
as near as possible to the plinth.
Unscrew all the screws holding the large
crate’s lid in place. Remove the lid to
reveal the protective foam packaging.
Using the hand holds provided, remove
one side of the foam, followed by the
other side.

You should remove all items of clothing
that may scratch the cabinet’s surface
for example watches, rings.

Remove the loudspeaker’s harness from
its recess in the packaging. Cut the
cable ties off, taking care not to cut
into the harness.

Feed the amplifier end of the harness
through the slot in the plinth, and guide
it into the cutout on the rear of the plinth.

You will need two people to lift the
Nautilus from the crate.

The hand holds for the first person are
the main body of the tweeter enclosure
and underside of the bass enclosure.

For the second person they are the
threaded spigot where the har ness
protrudes from the loudspeaker enclosure
and the top side of the bass enclosure
just below the lower mid assembly.

Placement of any loudspeaker can significantly
influence the relative balance of sound in the
listening seat and we recommend a degree of
experimentation.

In general it will be found
that Nautilus gives optimum results when
“toed-in” to a greater extent than in
previous systems, set typically at an angle
of between 60° and 90°. This is due to the
smooth, wide dispersion of Nautilus which
is capable of increasing the relative
significance of the side-wall reflection.

Another benefit of the dispersion
characteristic is the substantially increased
listening area in which a pleasant and
realistic stereo image may be enjoyed.

Positioning

Installation

Connection to Nautilus is via an 8-core cable
of high purity silver on copper, terminated in
bare ends to allow the most direct connection
to the amplifier terminals.

It is generally accepted that the wires
between power amp and driver should be
as short as possible, so we do not recom­mend that the captive cable be lengthened
in any way.

In the majority of cases it will be most
convenient to locate the crossover units in
close proximity to the power amplifiers, with
correspondingly short line interconnects.
Each cable should be connected directly
to the respective outputs of each amplifier.

The line from pre-amplifier and
crossover is likely to be comparatively
long and should, therefore, be of high
quality and low capacitance. It is further
recommended that the balanced input
of the crossover be used with two-core
screened cable – even if the pre-amp is
single ended.

In the latter case, the screen and one
core should be joined at the source end.

Detail of twin cored screened lead connecting phono to
xlr plugs (pre-amp to x-over)

Cable connection

1 Meter

From Pre-Amp
X.L.R. & Phono inputs
(X.L.R. to be used for
balanced inputs &
Phono for standard
single ended inputs)

USE ONE TYPE ONLY

To Power Amp
X.L.R. & Phono Outputs
(X.L.R. to be used for
balanced inputs &
Phono for standard
single ended inputs)

USE ONE TYPE ONLY
FOR EACH OUTPUT

Mains A/C in

Listening area

60° 90°

High Frequency Unit

Low Frequency Unit

Upper Mid Range Unit

Lower Mid Range Unit

All connections should be made with the
equipment turned off. Each Nautilus comes
with its own dedicated active crossover net­work. The serial number on the amplifier end
of the harness should match the serial number
on the rear of the crossover network.

The crossover can be connected to the
amplifiers with Phono leads for unbalanced
operation or XLR types for balanced opera­tion. Each Nautilus will require 1 separate
amplifier channel for each drive unit. The
gain and phase of each must be identical.

Each amplifier (channel) should be
capable of delivering at least 30V RMS
into 6 ohms for realistic levels of reproduc­tion. Most amplifiers capable of delivering
100 watts into 6 ohms should be suitable.
Connect each of the 4 crossover outputs (LF,
LMF, UMF, HF) in turn to each amplifier or
amplifier channel. The loudspeaker harness
should then be connected to the appro­priate terminals on the corresponding
amplifier. The input to the crossover should
then be connected to the output of the pre­amplifier. Connect the power and turn on
the crossover, followed by the amplifiers.

Before fine tuning the installation, double
check the polarity and security of the
connections.

If the hand-tightened nut that holds
Nautilus to the plinth is not done up
sufficiently tightly it can occasionally work
loose. This may create a difficult-to-locate
rattle or buzz. The accessory pack includes
a rubber washer and a steel washer that
should be employed between the plinth and
nut to eliminate this problem. The rubber
washer should rest against the plinth.

If it is not possible to position the crate
near the plinth when unpacking, the pieces
of foam covering Nautilus in the crate can
be used to support the loudspeaker close
to the plinth within reach of the loud­speaker harness.

If you need to alter the tilt of the
Nautilus, French chalk is supplied in the
accessory pack to ease movement between
the speaker and its plinth.

If the level of bass is uneven with
frequency, this is usually due to strong
excitation of resonance modes in the
room. Even small changes in the position
of the speakers within the listening room

can have a profound effect on the perceived
sound quality by altering the excitation of
these modes. Try mounting the speakers
along a different wall. Even moving large
pieces of furniture about can have an effect.

If the general level of bass is too high,
try moving the speakers further away from
the walls. Conversely, if you need more
bass, move the speakers closer to the
walls. Space behind the speakers also
improves the impression of perspective
on well recorded material.

If the sound is too harsh, increase the
amount of soft furnishing in the room. For
example, use heavier curtains. Conversely
reduce the amount of soft furnishing if the
sound is dull and lifeless.

Test for flutter echoes by clapping your
hands and listening for rapid repetitions.
These can smear the sound, but may be
reduced by irregular shaped surfaces such
as bookshelves and large pieces of furniture.

As Nautilus is designed in such a way
that the units are de-coupled from the enclo­sure and the base weighs a substantial
50kg, provision for spikes is unnecessary
and therefore not included.

Fine tuning

The GRP cabinets normally only require
dusting. If you wish to use an aerosol cleaner,
spray onto the cleaning cloth, not directly
onto the cabinet.

If the surface of the speaker suffers
any minor scratches they can be polished
out with fine T-Cut or finishing compound
such as “Finesse It” by 3M.

When making or breaking connections,
ensure all power is switched off otherwise
damage may result.

Avoid touching the drive units, espe­cially the domes, as damage may result.

Aftercare

Specification

(-6dB):10Hz – 25kHz
±0.5dB
10Hz – 220Hz: 305mm
220Hz – 880Hz: 100mm
880Hz – 3.5kHz: 50mm

3.5kHz – 25kHz: 25mm
4 (one per unit) of 30v rms
(100 watts into 6 ohms)
1050mm (H) x 900mm (D) x 420mm (W)
60kg
50kg
Midnight blue, Black and Silver

Bandwidth

Deviation from flat Response (25Hz – 20kHz)

Drive units

Amplifier requirements

Minimum for full satisfaction

Overall dimensions

Loudspeaker weight

Plinth weight

Standard finishes

Matrix is a registered trademark of B&W Loudspeakers Ltd.
Kevlar is a registered trademark of Dupont.
B&W Loudspeakers Ltd reserves the right to amend details of the
specification without notice in line with technical developments.
Copyright © B&W Loudspeakers Ltd.

Design Thomas Manss & Company, London 5/97

1. Read Instructions - All the safety and operating
instructions should be read before the appliance is
operated.

2. Retain Instructions - The safety and operating
instructions should be retained for future reference.

3. Heed Warnings - All warnings on the appliance and
in the operating instructions should be adhered to.

4. Follow Instructions - All operating and use
instructions should be followed.

5. Water and Moisture - The appliance should not be
used near water - for example, near a bathtub,
washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool and the like.

6. Carts and Stands - The appliance should be used
only with a cart or stand that is recommended by
the manufacturer.

7. Wall or Ceiling Mounting - The appliance should be
mounted to a wall or ceiling only as recommended
by the manufacturer.

8. Ventilation - The appliance should be situated so
that its location or position does not interfere with
its proper ventilation. For example, the appliance
should not be situated on a bed, sofa, rug, or
similar surface that may block the ventilation
openings; or placed in a built-in installation, such as
a bookcase or cabinet, that may impede the flow of
air through the ventilation openings.

9. Heat - The appliance should be situated away from
heat sources such as radiators, heat registers,
stoves, or other appliances that produce heat.

10. Power Sources - The appliance should be connected
to a power supply only of the type described in the
operating instructions or as marked on the
appliance.

11. Grounding or Polarisation - The appliance must be
grounded. When using an extension power-supply
cord or a power-supply cord other than that supplied
with the appliance, it should be 3-core, fitted with
the appropriate moulded-on plugs and carry safety
approval appropriate to the country of use.

12. Power Cord Protection - Power-supply cords should
be routed so that they are not likely to be walked on
or pinched by items placed on or against them,
paying particular attention to cords at plugs,
convenience receptacles and the point where they
exit from the appliance.

13. Cleaning - The appliance should be cleaned only as
recommended by the manufacturer.

14. Non-use Periods - The power cord of the appliance
should be unplugged from the outlet when left
unused for a long period of time.

15. Object and Liquid Entry - Care should be taken so
that objects do not fall and liquids are not spilled
into the enclosure through openings.

16. Damage Requiring Service - The appliance should
be serviced by qualified personnel when:
a. The power-supply cord or the plug has been
damaged; or
b. Objects have fallen, or liquid has been spilled
into the appliance; or
c. The appliance has been exposed to rain; or
d. The appliance does not appear to operate
normally, or exhibits a marked change in
performance; or
e. The appliance has been dropped, or the
enclosure damaged.

17. Servicing - The user should not attempt to service
the appliance beyond that described in the
operating instructions. All other servicing should be
referred to qualified service personnel

Safety instructions

WARNINGS

TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE
THIS EQUIPMENT TO RAIN OR MOISTURE.

OBSERVE ALL WARNINGS ON THE EQUIPMENT ITSELF. TO
AVOID ELECTRICAL SHOCK, DO NOT OPEN THE
ENCLOSURE. THERE ARE NO USER SERVICEABLE PARTS
INSIDE. REFER ALL SERVICE QUESTIONS TO AN
AUTHORISED B&W DEALER.

TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS
(POLARISED) POWER PLUG WITH AN EXTENSION CORD
RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN
BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.

ENSURE THAT THE VOLTAGE INDICATED ON THE PANEL
MATCHES THAT OF THE POWER SUPPLY.

REPLACE MAINS FUSE ONLY WITH THE SAME TYPE AND
RATING AS SHOWN ON THE VOLTAGE LABEL PLACED
NEAR THE MAINS INPUT SOCKET.

SWITCH OFF THE POWER AND REMOVE THE MAINS
CABLE FROM THE CASE BEFORE CHANGING THE FUSE.

THE EQUIPMENT MUST BE EARTHED (GROUNDED).

TO ENSURE ADEQUATE COOLING DO NOT OBSTRUCT
THE VENTILATION HOLES.

DO NOT INSERT OBJECTS THROUGH THE AMPLIFIER
VENTILATION HOLES.

IMPORTANT FOR UK ONLY:

The wires in this mains lead are coloured in
accordance with the following code:
green-and-yellow: earth
blue: neutral
brown: live
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured
markings identifying the terminals in your plug, proceed
as follows:
the wire which is coloured green and yellow must be
connected to the terminal in the plug which is marked
with the letter E, or by the earth symbol or coloured
green or green and yellow.
the wire which is coloured blue must be connected to
the terminal which is marked with the letter N or
coloured black.
the wire which is coloured brown must be connected to
the terminal which is marked with the letter L or
coloured red.

ACHTUNG
UM DIE GEFAHR EINES BRANDES ODER ELEKTRISCHEN
SCHLAGES AUSZUSCHLIESSEN, DARF DAS GERÄT WEDER
NÄSSE NOCH FEUCHTIGKEIT AUSGESETZT WERDEN.

BEACHTEN SIE ALLE WARNHINWEISE AUF DEM GERÄT.
ÖFFNEN SIE NIEMALS DAS GEHÄUSE IM INNERN BEFINDEN
SICH KEINE VOM BEDIENER ZU WARTENDEN TEILE. DER
SERVICE IST AUSSCHLIESSLICH VON EINEM AUTORISIERTEN
B&W-FACHHÄNDLER DURCHZUFÜHREN.

UM EINEM ELEKTRISCHEN SCHLAG VORZUBEUGEN, IST
BEIM ANSCHLIESSEN DES GERÄTES ANS NETZ UNBEDINGT
SICHERZUSTELLEN, DASS DIE POLE DES NETZSTECKERS
EXAKT IN DIE BUCHSEN DER JEWEILIGEN STECKDOSE
PASSEN.

STELLEN SIE SICHER, DASS DIE ANGEGEBENE
BETRIEBSSPANNUNG DER NETZSPANNUNG ENTSPRICHT.

FÜR DEN AUSTAUSCH DER NETZSICHERUNG DÜRFEN NUR
SICHERUNGEN DESSELBEN TYPS VERWENDET WERDEN. DIE
NENNDATEN SIND AUF DEM TYPENSCHILD NEBEN DER
EINGANGSBUCHSE ANGEGEBEN.

SCHALTEN SIE DAS GERÄT AUS UND ENTFERNEN SIE DAS
NETZKABEL VOM GERÄT, BEVOR SIE DIE SICHERUNG
WECHSELN.

DAS GERÄT DARF NUR MIT EINER ORDNUNGSGEMÄSSEN
SCHUTZKONTAKT-STECKDOSE BETRIEBEN WERDEN.

UM EINE AUSREICHENDE KÜHLUNG ZU GEWÄHRLEISTEN,
SOLLTEN DIE LÜFTUNGSLÖCHER NIEMALS VERDECKT UND
AUCH KEINE GEGENSTÄNDE HINEINGESTECKT WERDEN.

AVVERTENZE

PER EVITARE INCENDI O FOLGORAZIONI NON ESPORRE
L’APPARECCHIATURA A PIOGGIA O UMIDITUÀ

RISPETTARE TUTTE LE AVVERTENZE SULLE APPARECCHIATURE
STESSE. PER EVITARE SCOSSE NON APRIRE IL CABINET.
NON CONTIENE PARTI AD USO DELL’UTENTE. PER
QUALSIASI PROBLEMA RIVOLGERSI AL RIVENDITORE
AUTORIZZATO B&W.

PER EVITARE FOLGORAZIONI, NON UTILIZZARE QUESTA
SPINA DI CORRENTE (POLARIZZATA) CON UNA PROLUNGA
O ALTRO A MENO CHE LE LAMELLE NON SIANO
ACCURATAMENTE INSERITE PER EVITARE L’ESPOSIZIONE
DELLA LAMELLA STESSA.

CONTROLLARE CHE IL VOLTAGGIO DELL’APPARECCHIATURA
SIA QUELLO DELLA RETE.

SOSTITUITE IL FUSIBILE DI RETE SOLO CON LO STESSO TIPO
E LA STESSA POTENZA COME INDICATO SULL’ETICHETTA DI
VOLTAGGIO POSTA VICINO ALL’INGRESSO DEL CAVO DI
ALIMENTAZIONE.

TOGLIETE L’ALIMENTAZIONE PRIMA DI CAMBIARE IL
FUSIBILE.

QUESTA APPARECCHIATURA RICHIEDE LA MESSA A TERRA.

PER GARANTIRE UN RAFFREDDAMENTO ADEGUATO
DELL’APPARECCHIATURA, NON OSTRUITE I FORI DI
VENTILAZIONE.

NON INFILATE OGGETTI ATTRAVERSO I FORI DI
VENTILAZIONE.

ADVERTENCIAS

PARA EVITAR INCENDIOS O ACCIDENTES ELECTRICOS, NO
EXPONGA ESTE EQUIPO A LA LLUVIA O A LA HUMEDAD.

TENGA EN CUENTA TODAS LAS ADVERTENCIAS QUE
FIGURAN EN EL EQUIPO. PARA EVITAR UN SHOCK
ELECTRICO, NO ABRA LA CAJA. DENTRO DEL EQUIPO NO
EXISTEN PARTES MANIPULABLES POR EL USUARIO. TODAS
LAS CUESTIONES REFERENTES A REPARACIONES DIRIJALAS
A UN VENDEDOR AUTORIZADO DE B&W.

PARA EVITAR UN SHOCK ELECTRICO, NO USE ESTE
ENCHUFE DE ALIMENTACION (POLARIZADO) CON UN
RECEPTACULO DE UN CABLE DE EXTENSION NI CON OTRA
SALIDA, A MENOS QUE LAS CLAVIJAS QUEDEN
TOTALMENTE INSERTADAS, Y SE EVITE LA EXPOSICION DE
LAS MISMAS.

COMPRUEBE QUE EL VOLTAJE QUE SE INDICA EN EL PANEL,
ES EL QUE CORRESPONDE AL SUMINISTRO DE POTENCIA.

EL FUSIBLE ESTA DENTRO DEL MODULO, DEBE SER
REEMPLAZADO POR UNO DEL MISMO TIPO Y VALOR
NOMINAL QUE EL SUMINISTRADO, Y DEBE SER COLOCADO
POR UN SERVICIO TÉCNICO AUTORIZADO DE B&W.

EL EQUIPO NO DEBE TENER TOMA A TIERRA.

PARA ASEGURARSE QUE ESTA ADECUADAMETNE
REFRIGERADO Y NO OBSTRUYA LOS ORIFICIOS DE
VENTILACIÓN.

ADVARSLER

FOR AT UNDGÅ FARE FOR ILD OG RISIKO FOR ELEKTRISK
STØD MÅ UDSTYRET IKKE UDSÆTTES FOR VAND ELLER
FUGT.

VÆR OPMÆRKSOM PÅ DE ADVARSLER SOM ANGIVES PÅ
UDSTYRET. LAD VÆRE MED AT ÅBNE UDSTYRET. DER FINDES
INGEN BETJENINGSDELE INDE I APPARATET. ALLE SERVICE
SPØRGSMÅL BEDES RETTET TIL AUTORISERET B&W
FORHANDLER.

AF SIKKERHEDSHENSYN ER DETTE APPARATET FORSYNET
MED JORDSTIK. FOR AT UNDGÅ RISIKO FOR ELEKTRISK
STØD BØR DE DERFOR IKKE ANVENDE
FORLÆNGERLEDNING, MED MINDRE DENNE OGSÅ ER
JORDFORBUNDET.

APPARATET SKAL JORDFORBINDES!

CHECK AT SPÆNDINGSVÆLGEREN STÅR I KORREKT
POSITION.

SLUK FOR FORSTÆRKEREN OG AFBRYD NETLEDNINGEN
INDEN EVT. UDSKIFTNING AF SIKRINGEN.

UDSKIFTNING AF SIKRINGEN MÅ KUN SKE MED EN
TILSVARENDE SIKRING. SE DEN PÅKLISTREDE LABEL VED
SIDEN AF NEDSTIKKET.

FOR AT SIKRE BEDST MULIG AFKØLING VENLIGST UNDGÅ
AT PUTTE GENSTANDE GENNEM AFKØLINGSHULLERNE TIL
FORSTÆRKEREN.

CAUTION

RISK OF ELECTRIC

SHOCK DO NOT

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE THE BACK PANEL.
NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.

Explanation of Graphical Symbols
The lightning flash within an equilateral triangle is
intended to alert you to the presence of uninsulated
“dangerous voltage” within the product’s enclosure
that may be of sufficient magnitude to constitute an
electric shock to persons. The exclamation point
within an equilateral triangle is intended to alert you
to the presence of important operating and
maintenance (servicing) instructions in the literature
accompanying the appliance.

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A LIRE IMPÉRATIVEMENT

POUR ÉVITER TOUT RISQUE D’INCENDIE OU
D’ÉLECTROCUTION, NE PAS EXPOSER CET APPAREIL À LA
PLUIE OU À L’HUMIDITÉ.

RESPECTEZ LES CONDITIONS NORMALES D’UTILISATION DE
L’APPAREIL. POUR ÉVITER TOUTE ÉLECTROCUTION, NE PAS
OUVRIR LE CAPOT. IL N’EXISTE AUCUNE PIÉCE SUSCEPTIBLE
D’ÊTRE CHANGÉE PAR L’UTILISATEUR À L’INTÉRIEUR DE
L’APPAREIL. EN CAS DE PROBLÉME, ADRESSEZ-VOUS
EXCLUSIVEMENT Ë UN REVENDEUR AGRÉÉ B&W.

POUR ÉVITER TOUT RISQUE D’ÉLECTROCUTION, N’UTILISEZ
PAS CET APPAREIL AVEC UN CABLE DE PROLONGATION
D’ALIMENTATION SECTEUR OU UNE AUTRE PRISE QUE CELLE
FOURNIE, À MOINS QUE SES BROCHES SOIENT BIEN
INSÉRÉES À FOND DANS LA PRISE MURALE.

ASSUREZ-VOUS QUE LA TENSION SECTEUR INDIQUÉE SUR
LE PANNEAU CORRESPOND BIEN À CELLE DE VOTRE
ALIMENTATION.

NE REMPLACER LE FUSIBLE QU’AVEC UN FUSIBLE DE MÊME
TYPE COMME INDIQUÉ SUR L’ETIQUETTE D’INDICATION DE
TENSION SITUÉE PRÉS DE LA PRISE D’ENTRÉE SECTEUR.

ETEIGNER L’APPAREIL ET RETIRER LA PRISE AVANT DE
CHANGER LE FUSIBLE

CET APPAREIL DOIT ÊTRE MIS A LA MASSE ( PRISE TERRE ).

POUR GARANTIR UN BON REFROIDISSEMENT N’OBSTRUER
PAS LES PRISES D’AIR

N’INSÉRER PAS D’OBJETS DANS LES PRISES AIR

WAARSCHUWINGEN

OM BRAND- EN SCHOKGEVAAR TE VOORKOMEN MAG U
DIT APPARAAT NIET BLOOTSTELLEN AAN REGEN OF VOCHT.

VOLG ALLE WAARSCHUWINGEN DIE OP HET APPARAAT
STAAN ALTIJD OP.

OM EEN ELEKTRISCHE SCHOK TE VOORKOMEN: OPEN DE
BEHUIZING NIET.

ONDERDELEN KUNNEN NIET DOOR GEBRUIKER WORDEN
GEREPAREERD.

REPARATIE EN ONDERHOUD UITSLUITEND DOOR EEN
GEKWALIFICEERDE B&W-DEALER.

VOORKOM EEN ELEKTRISCHE SCHOK EN GEBRUIK DE
NETSPANNINGSKABEL UITSLUITEND MET KONTAKTDOZEN
WAAR DE STEKERPENNEN VOLLEDIG KUNNEN WORDEN
INGESTOKEN.

OVERTUIG U ERVAN OF DE NETSPANNING VAN HET
APPARAAT OVEREENKOMT MET DIE VAN HET LICHTNET.

VERVANG DE NETZEKERING UITSLUITEND DOOR EEN VAN
HETZELFDE TYPE EN WAARDE ZOALS WORDT AANGEGEVEN
DOOR HET TYPE-INDICATIEPLAATJE NAAST DE
LICHTSPANNINGSAANSLUITING.

HET APPARAAT MAG UITSLUITEND WORDEN AANGESLOTEN
OP EEN WANDKONTAKTDOOS MET RANDAARDE.

VOOR EEN OPTIMALE KOELING MOETEN DE VENTILATIE­OPENINGEN ALTIJD VOLLEDIG VRIJ BLIJVEN.

VOORKOM DAT VOORWERPEN EN VLOEISTOF VIA DE
VENTILATIE-OPENINGEN IN HET APPARAAT KUNNEN VALLEN.

VARNINGAR

FÖR ATT UNDVIKA ELDSVÅDA OCH ELEKTRISKA STÖTAR,
FÅR APPARATEN INTE UTSÄTTAS FÖR REGN ELLER FUKT.

LÄGG MÄRKE TILL ALL VARNINGSTEXT PÄ APPARATEN.
AVLÄGSNA EJ HÖLJET. APPARATEN INNEHÅLLER INGA
DELAR SOM KAN REPARERAS AV LEKMAN. ALL SERVICE
SKALL UTFÖRAS PÅ AV B&W AUKTORISERAD VERKSTAD.

UNDVIK ELEKTRISKA STÖTAR GENOM ATT ALLTID TILLSE ATT
STICKKONTAKTEN SITTER KORREKT I VÄGGUTTAGET ELLER
FÖRLÄNGNINGSSLADDEN.

KONTROLLERA ATT APPARATENS MÄRKSPÄNNING
ÖVERENSSTÄMMER MED SPÄNNINGEN I VÄGGUTTAGET.

ERSÄTT HUVUDSÄKRINGEN MED ENDAST SAMMA TYP OCH
VÄRDE SOM ANGES PÅ ETIKETTEN VID UTTAGET FÖR
STRÖMKABELN.

STÄNG AV APPARATEN OCH DRA UT STICKKONTAKTEN UR
VÄGGUTTAGET VID SÄKRINGSBYTE.

APPARATEN MÄSTE ANSLUTAS TILL JORDAT VÄGGUTTAG.

TILLSE ATT APPARATEN FÅR ORDENTLIG LUFTVÄXLING
GENOM ATT EJ TÄPPA TILL VENTILATIONSHÅLEN.

STICK EJ IN FRÄMMANDE FÖREMÅL I VENTILATIONSHÅLEN.

TURVAOHJEET

TULIPALON TAI SÄHKÖISKUN VAARAN VÄLTTÄMISEKSI
SUOJAA LAITE SATEELTA TAI KOSTEUDELTA.

OTA HUOMIOON KAIKKI LAITTEESSA OLEVAT
VAROITUKSTEKSIT. SÄHKÖISKUNVAARAAN VUOKSI ÄLÄ
AVAA LAITETTA. LAITE EI SISÄLLÄ KÄYTTÄJÄN
HUOLLETTAVISSA OLEVIA HUOLTOKOHTEITA. KÄÄNNY
HOULTOASIOISSA SUOMEN HI-FI KLUBIN PUOLEEN.

KÄYTÄ VAIN MAADOITETTUA JATKOJOHTOA.

VARMISTU, ETTÄ LAITTEEN TYYPPIKILVESSÄ OLEVA JÄNNITE
VASTAA SULAKETAULUSSA MAINITTUA.

VAIHTAESSASI SULAKETTA KÄYTÄ VAIN
ALKUPERÄISTYYPPISTÄ SULAKETTA; SULAKKEEN TYYPPI KÄY
ILMI VERKKOLIITÄNNÄN VÄLITTÖMÄSSÄ LÄHEISYYDESSÄ
OLEVASTA JÄNNITEKILVESTÄ.

KATKAISE VIRTA JA IRROITA LAITE SÄHKÖVERKOSTA ENNEN
SULAKKEEN VAIHTAMISTA.

RIITTÄVÄN JÄÄHTYMISEN VARMISTAMISEKSI LAITETTA SAA
KÄYTTÄÄVAIN SITEN ASENNETTUNA ETTÄ LAITTEEN
TUULETUSREIÄT OVAT VAPAAT ESTEISTÄ.

ÄLÄ TYÖNNÄ MITÄÄN ESINEITÄ LAITTEEN TUULETUSREISTÄ
SISÄÄN.

AVISOS

PARA EVITAR O RISCO DE CHOQUE ELÉCTRICO, NÄO
EXPONHA ESTE EQUIPAMENTO À CHUVA OU HUMIDADE.

RESPEITE TODOS OS AVISOS PRESENTES NO PRÓPRIO
EQUIPAMENTO. PARA EVITAR CHOQUES ELÉCTRICOS, NÄO
ABRA A TAMPA DO EQUIPAMENTO. NÄO EXISTEM PARTES
SUBSTITUÍVEIS PELO UTILIZADOR NO INTERIOR, DEVENDO
TODAS AS QUESTÖES RELATIVAS A ASSISTÊNCIA SER
APRESENTADAS A UM REVENDEDOR AUTORIZADO B&W.

PARA EVITAR O RISCO DE CHOQUE ELÉCTRICO, NÄO UTILIZE
UMA EXTENSÄO PARA O CABO DE ALIMENTAÇÄO, A NÄO
SER QUE OS PINOS DA FICHA FIQUEM COMPLETAMENTE
COBERTOS.

ASSEGURE-SE QUE A TENSÄO DE ALIMENTAÇÄO
ESPECIFICADA PARA O EQUIPAMENTO É IGUAL À DA SUA
INSTALAÇÄO.

O FUSÌVEL DE ALIMENTAÇÄO ESTÁ COLOCADO JUNTO DA
TOMADA DE ENTRADA DE CORRENTE EM CASO DE DEFEITO,
O SUBSTITUTO DEVE SER DO MESMO TIPO E CALIBRE DO
INICIALMENTE FORNECIDO E A SUBSTITUIÇÄO LEVADA A
CABO POR UM REVENDEDOR AUTORIZADO B&W.

ESTE EQUIPAMENTO DEVE SER LIGADO COM CONTACTO À
TERRA.

DEPOIS DE LIGADO NÄO DESLOQUE O EQUIPAMENTO, POIS
PODEM SOLTAR-SE OS CABOS DE LIGAÇÄO E CAUSAR
DANOS.

ADVARSEL

FOR Å UNNGÅ BRANN OG ELEKTRISKE STØT, MÅ DETTE
UTSTYR IKKE UTSETTES FOR VANN ELLER FUKTIGE
OMGIVELSER.

FØLG ANVISNINGEN PÅ PRODUKTET. SKAL IKKE ÅPNES.
BRUKER VIL IKKE FINNE NOEN DELER FOR UTSKIFTING
INNVENDIG. ALLE FORESPØRSLER OM REPARASJON SKAL
RETTES TIL AUTORISERT B&W FORHANDLER.

MÅ IKKE BRUKES I IMPROVISERTE KONTAKTER SOM
BLOTTLEGGER NETTSTIKKETS METALLDELER.

PASS PÅ AT UTLESNINGEN PÅ BAKSIDEN AV APPARATET
KORRESPONDERER MED DEN LOKALE NETTSPENNING.

HOVEDSIKRING SKAL KUN ERSTATTES MED DEN TYPE OG
VERDI SOM KORRESPONDERER MED ANGIVELSEN VED
SIDEN AV NETTKABELKONTAKTEN.

SKRU AV FORSTERKEREN OG FJERN NETTKABELEN F¯R
BYTTING AV HOVEDSIKRING.

DETTE APPARATET MÅ JORDES.

VENTILASJONSHULLENE MÅ IKKE BLOKKERES. DETTE ER
NØDVENDIG FOR Å SIKRE TILSTREKKELIG KJØLING.

INGEN OBJEKTER MÅ PUTTES ELLER STIKKES INN GJENNOM
VENTILASJONSHULLENE.

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