Cambridge Audio Azur 540A User manual

azur 540A/640A
Integrated amplifier / HIFI-Verstärker / Amplificateur intégré / Amplificador integrado / Amplificatore
integrato / Geïntegreerde versterker / Integreret forstærker / Встроенный усилитель
User’s manual / Bedienungsanleitung / Mode d'emploi / Manual del usuario / Manuale per l'utente /
Gebruikershandleiding / Brugermanual / Руководство для пользователя

2
Thank yyou ffor ppurchasing tthis CCambridge AAudio aazur sseries aamplifier. IIt
is tthe rresult oofoour mmost eextensive eever rresearch aand ddevelopment
program iinoover tthree ddecades oofpproducing hhigh qquality aaudio pproducts.
We hhope tthat yyou wwill aappreciate tthe rresults aand eenjoy mmany yyears oof
listening ppleasure.
About tthis aamplifier
The design of any purist audio amplifier is mainly centred on two main
areas, the Power Supply and the driver stage's ability to drive the output
stage effectively. We at Cambridge Audio have researched the best
possible ways to achieve the highest performance in these areas, at a
sensible price. The Azur 540A/640A topology uses the same tried and
tested output devices that Cambridge Audio have used in previous
award winning amplifier models, but many hours of research have gone
into the study and development of the preceding stages. This driver
circuitry is essentially a matched differential input pair, loaded by a
current mirror and driven from a transient compensated current source
driving a high beta cascoded voltage gain stage. The thermally
compensated output stage is setup to inherently give optimum Class AB
conditions (for greatly reduced cross over distortion caused by dynamic
heating of the output dies). In addition the topology includes a further
improvement to the driver stage consisting of a pure class-A follower to
isolate the voltage amplifier transistors from the difficult loading of the
output transistors. This increased current drive to the output stage
combined with a novel transient feed forward circuit doubles the slew
rate to 40V/uS.
Due to critically refined circuit board layouts, careful component
placement and short signal paths the stability of these amplifiers is
extremely high which allows the compensation components to be
reduced in size. This has the effect of reducing distortion, increasing
dynamics and allowing the bandwidth to be opened up to a massive
80kHz, ideal for the new 'better than CD' high bandwidth sources such
as DVD-Audio and Super Audio CD.
The performance of any amplifier is limited by the dynamic abilities of its
power supply, and for this reason Cambridge Azur amplifiers incorporate
many features, including a low flux toroidal transformer, paralleling of
the reservoir capacitors and careful use of bypass capacitors, to allow
the instantaneous clean delivery of charge whenever it is needed. This
ensures an open and natural sound being reproduced and ensures a
positive response to any dynamics or sudden transients in the signal
being reproduced.
Particular attention has also been paid to the quality of the passive
components which have been carefully chosen for their sonic benefits.
The Azur 640A in addition uses high grade Polypropylene signal bypass
capacitors to improve signal flow and dynamics.
The Cambridge Audio Azur 540A and 640A amplifiers also incorporate
tone controls, which may be switched out of circuit in 'direct' mode for
the shortest and therefore purest signal path. Other features include
24k gold plated phono sockets, dual tape loops, pre amp output, a
headphone socket and a secondary set of high level loudspeaker
terminals.
An important feature which has been included as standard on both the
540A and 640A is the new innovative Cambridge Audio designed CAP5
protection system. This consists of a microprocessor which constantly
monitors the amplifier providing comprehensive protection against a
variety of possible faults. This has been achieved without adding any
active circuitry into the signal path to degrade the sound or the dynamic
abilities of the amplifier.
INTRODUCTION

540A/640A Integrated amplifier
3
Cambridge Audio has built up an extensive knowledge base due to
meticulous listening and tweaking. This attention to detail results in
amplifiers that are totally convincing in the reproduction of both tonal
colour and dynamic contrast, deliver a vibrant and fluid performance
with music of all types and are extremely musically involving.
To get the absolute best from this equipment we would encourage you
to use only high quality source components. Of course we particularly
recommend tuners and digital equipment from the Cambridge Audio
range, all of which have been designed to the same exacting standards
as our amplifiers. Many types of loudspeakers were used in the
development of these amplifiers to ensure maximum compatibility with
a wide variety of designs.
Interconnects and speaker cables are also something that shouldn't be
overlooked. Please do not compromise your system's performance by
using poor quality cables to connect source components to your
amplifier or the amplifiers output to your loudspeakers. A system is only
as good as its weakest link. For this reason we do not include cheap
"freebie" cables with any of our products. Your dealer can supply good
quality Cambridge Audio interconnects and Mordaunt Short/Gale
loudspeaker cables that will make a noticeable improvement to the
sound quality of your system.
Now wweiinvite yyou ttossit bback, rrelax aand eenjoy!
Matthew Bramble
Technical Director
Introduction.................................................................................................2
Safety precautions......................................................................................4
Installation...................................................................................................5
Rear panel connections .............................................................................6
Connecting.................................................................................................. 8
Operating instructions..............................................................................10
CAP5 - Five way protection system...........................................................12
Troubleshooting.........................................................................................14
Specifications............................................................................................14
Limited warranty....................................................................................... 15
CONTENTS

4
Plug ffitting iinstructions ((UK only)
The cord supplied with this appliance is factory fitted with a 13A mains plug fitted
with a 3A fuse inside. If it is necessary to change the fuse, it is important that a 3A
one is used. If the plug needs to be changed because it is not suitable for your
socket, or becomes damaged, it should be cut off and an appropriate plug fitted
following the wiring instructions below. The plug must then be disposed of safely,
as insertion into a 13A socket is likely to cause an electrical hazard. Should it be
necessary to fit a 3-pin BS mains plug to the power cord the wires should be fitted
as shown in this diagram. The colours of the wires in the mains lead of this
appliance may not correspond with the coloured markings identifying the
terminals in your plug. Connect them as follows:-
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
The wire which is coloured GREEN/YELLOW
must be connected to the terminal which is
marked with the letter 'E' or coloured
GREEN.
If your model does not have an earth wire,
then disregard this instruction.
If a 13 Amp (BS 1363) plug is used, a 3 Amp fuse must be fitted, or if any other
type of plug is used a 3 Amp or 5 Amp fuse must be fitted, either in the plug or
adaptor, or on the distribution board.
Checking tthe ppower ssupply rrating
For your own safety please read the following instructions carefully before
attempting to connect this unit to the mains.
Check that the rear of your unit indicates the correct supply voltage. If your mains
supply voltage is different, consult your dealer.
This unit is designed to operate only on the supply voltage and type that is
indicated on the rear panel of the unit. Connecting to other power sources may
damage the unit.
This equipment must be switched to Standby mode when not in use, unplugged if
not used for long periods of time, and must not be used unless correctly earthed.
To reduce the risk of electric shock, do not remove the unit's cover (or back). There
are no user serviceable parts inside. Refer servicing to qualified service personnel.
If the power cord is fitted with a moulded mains plug the unit must not be used if
the plastic fuse carrier is not in place. Should you lose the fuse carrier the correct
part must be reordered from your Cambridge Audio dealer.
The lightning flash with the arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of uninsulated
'dangerous voltage' within the product's enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to
persons.
The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and
maintenance instructions in the service literature relevant to this
appliance.
This product complies with European Low Voltage (73/23/EEC)
and Electromagnetic Compatibility (89/336/EEC) Directives
when used and installed according to this instruction manual. For
continued compliance only Cambridge Audio accessories should
be used with this product and servicing must be referred to
qualified service personnel.
SAFETY PRECAUTIONS

540A/640A Integrated amplifier
5
Please take a moment to read these notes before installing your
amplifier, they will enable you to get the best performance and prolong
the life of the product.
The unit requires ventilation above and below. Do not situate it on a rug
or other soft surface and do not obstruct the air inlet and outlet grilles
on the underside and top cover. Do not place in an enclosed area such
as a bookcase or in a cabinet.
This unit must not be exposed to dripping or splashing water or other
liquids. No objects filled with liquid, such as vases, shall be placed on
the unit. In the event, switch off immediately, disconnect from the mains
supply and contact your dealer for advice.
Ensure that small objects do not fall through any ventilation grille. If this
happens, switch off immediately, disconnect from the mains supply and
contact your dealer for advice.
Do not route the power cable so that it can be walked upon or damaged
by other items near it.
Electronic audio components have a running in period of around a week
(if used several hours per day). This will allow the new components to
settle down, the sonic properties will improve over this time.
It is recommended that when bi-amping, the same type power amplifiers
are used.
This amplifier has been designed to be left in Standby mode when not
in use, this will increase the life of the amplifier (this is true with all
electronic equipment). If you do not intend to use this unit for a long
period of time, unplug it from the mains socket.
To clean the unit, wipe its case with a moist, lint-free cloth. Do not use
any cleaning fluids containing alcohol, ammonia or abrasives. Do not
spray an aerosol at or near the amplifier.
These units are not user serviceable, never attempt to repair,
disassemble or reconstruct the unit if there seems to be a problem. A
serious electric shock could result if this precautionary measure is
ignored. In the event of a problem or failure, please contact your dealer.
This unit should be installed on a sturdy, level surface. Due to stray
magnetic fields turntables should not be located nearby due to
interference.
INSTALLATION

6
AC power ssocket
Once you have completed all connections to the amplifier, plug the AC
Power Cable into an appropriate mains socket. The amplifier is now
ready for use.
Loudspeaker cconnections
The 540A and 640A have two sets of Loudspeaker terminals on the rear
panel, speakers A and B. Speakers A are the main speaker terminals,
speakers B are the secondary switchable speaker terminals. Connect
the wires from your left channel loudspeaker to the LEFT + & - terminals,
and likewise the wires from the right channel loudspeaker to the RIGHT
+ & - terminals. In each case the red terminal is the positive output, and
the black terminal is the negative input. Care should be taken to ensure
no stray strands of wire are shorting speaker outputs together. Please
Note: TThis aamplifier hhas bbeen ddesigned ffor uuse wwith lloudspeakers tthat
have aannominal iimpedance oofbbetween 44aand 88oohms.
Please eensure tthat tthe sspeaker tterminals hhave bbeen ttightened
adequately ttopprovide a
aggood eelectrical cconnection. IItiisppossible ffor tthe
sound qquality ttobbeaaffected iiftthe sscrew tterminals aare lloose.
Pre aamp oouts
Connect these sockets to the inputs on an external Power Amplifier(s).
Tape mmon
These sockets can be connected to a tape deck or to the analog sockets
on a MiniDisc or CD recorder. Connect an interconnect cable from the
recorder's Line Out sockets to the amplifier's Tape Monitor sockets. This
T
ape In
R
ec Out 1
R
ec Out
2
T
ape In
R
ec Out 1
Rec Out
2
M
ax Power Consum
p
tion
:
615W
P
re-Out
Pre-Out
I
mpedance
4
- 8 ohms
Impedance 4 - 8 ohms
L
oudspeaker Terminals
Loudspeaker Terminals
Important
Important
P
lease ensure that loudspeaker terminals are fully tightened
Please ensure that loudspeaker terminals are fully tightened
Veuillez s'assurer que les bornes de l'enceinte sont entierement serreesVeuillez s'assurer que les bornes de l'enceinte sont entierement serrees
I
mpedance 4 - 8 ohms
Impedance 4 - 8 ohms
R
ight
Right
L
eft
Left
R
ight
Right
L
eft
Left
Left
Left
B
B
A
A
R
ight
Right
L
eft
Left
R
ight
Right
B
B
A
A
AV / MD
AV / MD
DVD
DVD
T
uner / DAB
Tuner / DAB
CD
CD
Aux / Phon
o
Aux / Phono
P
re-Out
Pre-Out
AV / MD
AV / MD
D
VD
DVD
Tuner / DAB
Tuner / DAB
C
D
CD
A
ux / Phono
Aux / Phono
R
ight
Right
L
eft
Left
Ri
g
h
t
Right
L
eft
Left
Groun
d
Ground
w
ww.cambridge-audio.co.u
k
www.cambridge-audio.co.uk
M
anufactured in an
Manufactured in an
I
SO900
2
ISO9002
approved facility
approved facility
P
ower A
C
Power AC
D
esigned and Engineered in London, England
Designed and Engineered in London, England
R
isk of electric shoc
k
Risk of electric shock
D
o not ope
n
Do not open
C
aution
Caution
Ris
q
ue de choc electri
q
ue
Risque de choc electrique
Ne
p
as ouvrir
Ne pas ouvrir
Avis
Avis
Vorm offnen des geratesVorm offnen des gerates
N
etzstecker ziehen
Netzstecker ziehen
Achtung
Achtung
a
zur 6
4
0A Integrated Amplifie
r
azur 640A Integrated Amplifier
Power Rating:
Power Rating:
230V AC 50Hz
230V AC 50Hz
REAR PANEL CONNECTIONS

540A/640A Integrated amplifier
7
monitor doubles up as the standard tape/recording medium input.
Note: WWhen cconnecting aassource ccomponent tthat hhas bboth aaniinput aand
output ii.e. aattape rrecorder, tthe o
output oofwwhich sshould aalways bbe
connected ttotthe TTape MMon iinput. TThis wwill eeliminate hhowlround iiftthe
wrong iinput cchannel iissselected.
Tape oout
These sockets can be connected to a tape deck or to the analog sockets
on a MiniDisc or CD recorder. Connect an interconnect cable from the
Tape Out sockets of this amplifier to the recorder's Line In. Please note
that this unit has two tape loops which have identical outputs.
CD/Tuner/DVD/AV/MD iinput ssockets
These inputs are suitable for any 'line level' source equipment such as
CD players, DAB or FM/AM tuners etc.
Aux/Phono iinput ssockets
Connect any 'line level' source equipment to these sockets i.e. CD player
or DAB tuner. Alternatively this particular input can be converted to a
dedicated turntable if desired although to do this a Cambridge Audio
PM01 Phono Module must be fitted. Please contact your Cambridge
Audio dealer who can supply and install a phono stage to your amplifier.
These iinputs aare ffor aanalog aaudio ssignals oonly. TThey sshould nnot bbe
connected ttotthe ddigital ooutput oofaaCCDpplayer ooraany oother ddigital ddevice.
Ground cconnection
If you are connecting a turntable to your amplifier then its ground wire
should be attached to this point

8
When designing our amplifiers we have tried to include features that
allow you to connect your system in various ways. The inclusion of
features such as PRE-OUT and SPEAKER B connections mean that you
can configure your system depending on your requirements. The
following diagrams are designed to make connection easy.
Basic cconnection
The following diagram shows the basic connection of your amplifier to a
CD player and a pair of loudspeakers.
Tape cconnection
The following diagram shows how to connect the amplifier to a tape
recorder or other source with a record and monitor connection.
Please note that either of the tape loop outputs can be used (as they are
both the same).
CONNECTING
M
ax Power
C
onsumption
:
615W
Pre-Ou
t
Pre-Out
Impedance 4 - 8 ohms
Impedance 4 - 8 ohms
Loudspeaker Terminals
Loudspeaker Terminals
Important
Important
P
lease ensure that loudspeaker terminals are fully tightened
Please ensure that loudspeaker terminals are fully tightened
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
Impedance 4 - 8 ohms
Impedance 4 - 8 ohms
R
ight
Right
Left
Left
R
ight
Right
L
ef
t
Left
L
eft
Left
B
B
A
A
Ri
g
h
t
Right
L
eft
Left
Right
Right
B
B
A
A
R
ec Out
1
Rec Out 1
R
ec Out
2
Rec Out 2
T
ape I
n
Tape In
AV / MD
AV / MD
DVD
DVD
Tuner / DAB
Tuner / DAB
CD
CD
A
ux / Phon
o
Aux / Phono
P
re-Out
Pre-Out
R
ec Out 1
Rec Out 1
R
ec Out
2
Rec Out 2
T
ape I
n
Tape In
AV
/
MD
AV / MD
DVD
DVD
Tuner / DAB
Tuner / DAB
C
D
CD
Aux / Phono
Aux / Phono
R
ight
Right
L
ef
t
Left
R
ight
Right
L
eft
Left
G
roun
d
Ground
w
ww.cambridge-audio.co.uk
www.cambridge-audio.co.uk
M
anufactured in an
Manufactured in an
ISO900
2
ISO9002
approved facilit
y
approved facility
P
ower AC
Power AC
D
esigned and Engineered in London, Englan
d
Designed and Engineered in London, England
R
isk of electric shock
Risk of electric shock
D
o not o
p
e
n
Do not open
Caut
i
on
Caution
Risque de choc electriqu
e
Risque de choc electrique
N
e
p
as ouvr
i
r
Ne pas ouvrir
A
v
is
Avis
Vorm offnen des gerates
Vorm offnen des gerates
N
etzstecker ziehe
n
Netzstecker ziehen
A
c
h
tun
g
Achtung
a
zur 6
4
0A Integrated Amplifier
azur 640A Integrated Amplifier
Power Rating:
Power Rating:
230V AC 50Hz
230V AC 50Hz
T
ape In
1
R
ec Out
1
Rec Out
2
T
ape In 1
R
ec Out 1
Rec Out
2
M
ax Power
C
onsumption
:
61
5W
Pre-Ou
tPre-Out
Impedance 4 - 8 ohms
Impedance 4 - 8 ohms
Loudspeaker Terminals
Loudspeaker Terminals
Important
Important
P
lease ensure that loudspeaker terminals are fully tightened
Please ensure that loudspeaker terminals are fully tightened
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
Impedance 4 - 8 ohms
Impedance 4 - 8 ohms
R
ight
Right
Left
Left
R
ight
Right
L
ef
t
Left
L
eft
Left
B
B
A
A
Ri
g
h
t
Right
L
eft
Left
Right
Right
B
B
A
A
AV / MD
AV / MD
DVD
DVD
Tuner / DAB
Tuner / DAB
CD
CD
A
ux / Phon
o
Aux / Phono
P
re-Out
Pre-Out
AV
/
MD
AV / MD
DVD
DVD
Tuner / DAB
Tuner / DAB
C
D
CD
Aux / Phono
Aux / Phono
R
ight
Right
L
ef
t
Left
R
ight
Right
L
eft
Left
G
roun
d
Ground
w
ww.cambridge-audio.co.uk
www.cambridge-audio.co.uk
M
anufactured in an
Manufactured in an
ISO900
2
ISO9002
approved facilit
y
approved facility
P
ower AC
Power AC
D
esigned and Engineered in London, Englan
d
Designed and Engineered in London, England
R
isk of electric shock
Risk of electric shock
D
o not o
p
e
n
Do not open
Caut
i
on
Caution
Risque de choc electriqu
e
Risque de choc electrique
N
e
p
as ouvr
i
r
Ne pas ouvrir
A
v
is
Avis
Vorm offnen des gerates
Vorm offnen des gerates
N
etzstecker ziehe
n
Netzstecker ziehen
A
c
h
tun
g
Achtung
a
zur 6
4
0A Integrated Amplifier
azur 640A Integrated Amplifier
Power Rating:
Power Rating:
230V AC 50Hz
230V AC 50Hz
Rec InRec Out
Tape //MMD Player

540A/640A Integrated amplifier
9
Bi-aamping
The azur amplifiers are equipped with PRE-OUT sockets. If your
loudspeakers have two sets of terminals then it is possible to bi-amp
your system using a further power amplifier. Bi-amping uses two
amplifiers to drive the bass and treble units in the loudspeakers
independently, resulting in even greater clarity coupled with improved
control and dynamics. An example of a bi-amp setup is illustrated in the
diagram adjacent.
Please note that if using a second azur amplifier as the slave amplifier,
any line input can be used to connect from the master’s Pre-Out.
Using SSpeaker BBconnections
The Speaker B connections on the back of the amplifier allow a second
set of speakers to be used, which could be for another room.
Tape In
R
ec Out 1
R
ec Out
2
Tape In
R
ec Out
1
R
ec Out
2
M
ax Power
C
onsumptio
n
:
615
W
P
re-Out
Pre-Out
I
mpedance 4 - 8 ohms
Impedance 4 - 8 ohms
L
oudspeaker Terminals
Loudspeaker Terminals
Important
Important
P
lease ensure that loudspeaker terminals are fully tightened
Please ensure that loudspeaker terminals are fully tightened
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
I
mpedance 4 - 8 ohm
s
Impedance 4 - 8 ohms
R
ight
Right
L
eft
Left
R
ight
Right
Left
Left
L
eft
Left
B
B
A
A
Ri
g
ht
Right
Left
Left
Right
Right
B
B
A
A
AV / MD
AV / MD
DVD
DVD
Tuner / DA
B
Tuner / DAB
C
D
CD
Aux / Phon
o
Aux / Phono
P
re-Out
Pre-Out
AV
/
MD
AV / MD
DVD
DVD
Tuner / DAB
Tuner / DAB
C
D
CD
Aux / Phon
o
Aux / Phono
Righ
t
Right
Left
Left
R
ight
Right
L
eft
Left
Groun
d
Ground
w
ww.cambridge-audio.co.uk
www.cambridge-audio.co.uk
M
anufactured in an
Manufactured in an
I
SO900
2
ISO9002
approved facilit
y
approved facility
P
ower A
C
Power AC
D
esigned and Engineered in London, England
Designed and Engineered in London, England
R
isk of electric shock
Risk of electric shock
D
o not o
p
en
Do not open
Caut
i
on
Caution
Risque de choc electriqu
e
Risque de choc electrique
N
e
p
as ouvr
i
r
Ne pas ouvrir
A
v
is
Avis
Vorm offnen des gerates
Vorm offnen des gerates
N
etzstecker ziehen
Netzstecker ziehen
Achtun
g
Achtung
azur 6
4
0A Integrated Amplifie
r
azur 640A Integrated Amplifier
Power Rating:
Power Rating:
230V AC 50Hz
230V AC 50Hz
Ta
p
e In
Rec Out 1
R
ec Out
2
T
ape I
n
Rec Out 1
Rec Out 2
P
re-Out
Pre-Out
I
m
p
edance 4 - 8 ohms
Impedance 4 - 8 ohms
L
oudspeaker Terminals
Loudspeaker Terminals
Important
Important
P
lease ensure that loudspeaker terminals are fully tightened
Please ensure that loudspeaker terminals are fully tightened
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
Veuillez s'assurer que les bornes de l'enceinte sont entierement serrees
I
m
p
edance 4 - 8 ohm
s
Impedance 4 - 8 ohms
Ri
g
h
t
Right
L
eft
Left
Ri
g
h
t
Right
Left
Left
L
eft
Left
B
B
A
A
Righ
t
Right
Left
Left
Right
Right
B
B
A
A
AV
/
MD
AV / MD
DVD
DVD
Tuner
/
DA
B
Tuner / DAB
C
D
CD
Aux
/
Phon
o
Aux / Phono
P
re-Out
Pre-Out
AV
/
MD
AV / MD
DVD
DVD
T
uner
/
DAB
Tuner / DAB
C
D
CD
A
ux
/
Ph
on
o
Aux / Phono
Righ
t
Right
Left
Left
R
ight
Right
L
eft
Left
Groun
d
Ground
w
ww.cambridge-audio.co.uk
www.cambridge-audio.co.uk
M
anufactured in an
Manufactured in an
I
SO900
2
ISO9002
approved facility
approved facility
P
ower A
C
Power AC
D
esigned and Engineered in London, England
Designed and Engineered in London, England
R
isk of electric shock
Risk of electric shock
D
o not open
Do not open
C
autio
n
Caution
Ris
q
ue de choc electri
q
u
e
Risque de choc electrique
Ne pas ouvrir
Ne pas ouvrir
A
vi
s
Avis
Vorm offnen des gerates
Vorm offnen des gerates
N
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azur 640A Integrated Amplifier
Power Rating:
Power Rating:
230V AC 50Hz
230V AC 50Hz
M
ax Power
C
onsumptio
n
Max Power Consumption
:
:
615
W
615W
Master aamplifier
Slave aamplifier - if using an integrated amplifier, volume must be set to full
CD player
Bass Bass
Treble Treble

10
Standby/On
Switches the unit between Standby mode (indicated by dim power LED)
and On (indicated by bright power LED). Standby is a low power mode
where the power consumption is less than 10 Watts. The unit should be
left in standby when not in use.
Headphone ssocket
Allows for the connection of headphones with a ¼" Jack plug connector.
When the headphones are connected the loudspeaker relay is released
switching off the output to the loudspeakers (Speakers A and B).
Speaker BBoon/off
Enables/disables the secondary set of speaker terminals on the back
panel. This can be used for listening to an extra set of speakers in
another room.
Please note that care should be taken when selecting if two
loudspeakers are going to be used on each channel. If the combined
resistance measured on the speaker terminals is too low the amplifier
may not switch out of standby mode until a suitable load resistance is
detected. For more information please see section on CAP5 protection
system.
Note - WWhen uusing ttwo ppairs oofsspeakers eeach ppair sshould bberrated aat
least 66oohms ((or hhigher). 44oohm sspeakers aare nnot rrecommended wwhen
using mmore tthan oone ppair.
Direct
This control gives the audio signal a more direct path to the power
amplifier stage of your amplifier, bypassing the tone control circuits for
the purest possible sound quality.
Integrated Amplifier
Volume
Balance
Aux/Phono CD DVD AV/ MDTuner/DAB Tape Mon
TrebleBass
Direct
Protection
Speaker BPhones
Standby/On
azur 640A
OPERATING INSTRUCTIONS

540A/640A Integrated amplifier
11
Bass aand ttreble ttone ccontrols
These controls allow subtle adjustments to the tonal balance of the
sound. In the central position these controls have no effect. These
controls only modify the sound through your loudspeakers and the Pre-
Out sockets (where featured), they do not affect the signals sent through
the Tape Out connections. With a well produced CD and a good system
the tone controls are unnecessary and can be switched out. If the
musical recording is of poor quality and/or the
loudspeakers/surroundings are lacking it may be necessary to adjust
the tone controls to compensate.
Volume
The Volume control increases/decreases the level of the sound from the
outputs of the amplifier. This control affects the level of the Loudspeaker
output, the pre amp output and the headphone output. It does not affect
the Tape Out Connections.
It is advisable to turn the Volume control fully anti-clockwise before
switching the amplifier on.
Balance
This control allows you to adjust the relative output levels of the left and
right channels. In the central position the output from each channel is
equal. This control only modifies the sound through your loudspeakers
and the Pre-Out sockets (where featured), it does not affect the signals
sent through the Tape Out connections.
Input sselection ppush bbuttons
Push the appropriate input selection button to select the source
component that you wish to listen to. The signal selected is also fed to
the Tape Out sockets so that it may be recorded. The input should not
be changed whilst recording, although the recorded signal can be
checked using the tape input Tape monitor.
Tape mmonitor sselection bbutton
This control lets you listen to the output signal from a tape recorder or
signal processor connected to the amplifier's Tape monitor sockets.
When Tape monitor is selected, the source component chosen by the
input selection push buttons continues to be routed to the Tape Out
sockets for recording or processing.
Remote ccontrol ooperation/features
This Amplifier is supplied with a system remote control that operates
both this amplifier and the Cambridge Azur CD players. The functions
relevant to the amplifier are as follows:
Power - Switches the amplifier between Standby mode and On mode.
Mute - Mutes the audio (indicated by the input LED flashing).
Volume ++/-- The volume buttons increase and decrease the Volume of
the amplifier output.
Input sselect - The five input select buttons and the Tape monitor select
button are used to change the input source.

12
If the Loudspeaker impedance is low the temperature of the amplifier
may rise faster as the amplifier is working harder. If the amplifier is
mounted in a cabinet or the ventilation slots are obstructed the over
temperature detection may activate/reactivate after a short listening
time.
Short ccircuit ddetection
During power up from standby or during input channel selection CAP5
performs a check on the Loudspeaker terminals to see if a short across
the terminals has been accidentally introduced. If the resistance
measured across the Loudspeaker terminals is too low the unit will stay
in Standby mode until the fault has been removed and Power up is re-
attempted.
DC ddetection
CAP5 offers Loudspeaker protection if the output of the amplifier goes
to DC because of some internal fault. This is a rare fault although it
could just save those expensive Loudspeakers.
If the amplifier is switched out of standby when the input signal to the
amplifier is too high (with the current volume setting) the CAP5 system
will detect this and reduce the volume to a suitable level.
Overvoltage/overcurrent ddetection
CAP5 offers V/I protection by constantly monitoring the output
transistors to keep them working inside their Safe Operating Area (SOA).
The SOA is a set of limits given by the output transistor manufacturer to
ensure reliability. Many amplifier designers include V/I limiting in the
Cambridge Audio has developed a proprietry protection system to
ensure reliability and a long life to its amplifiers. This protection system
comprises of five main protection methods:
Intelligent cclipping ddetection
CAP5 has the ability to detect when the amplifier starts to clip or
overdrive its output, which can damage Loudspeakers, the amplifier
power supply and most importantly degrade the sound. When CAP5
detects clipping the volume will be automatically nudged down until
CAP5 detects an undistorted* output (*the volume is nudged down until
the distortion is less than 2% which listening tests have shown is
difficult to hear).
It is possible to disable only this feature by holding down the Standby
button during power up (whilst plugging the unit into the mains power).
The unit will indicate this by flashing the protection LED for several
seconds. Disabling the clipping detection is not advised as this feature
has been added to protect the amplifier.
Over ttemperature ddetection
CAP5 includes temperature detection which constantly monitors the
heat generated by the output transistors. When the monitored
temperature reaches a high level (suitably within the limits of the output
devices) the amplifier will automatically switch into a fault mode
(indicated by double flashing of the protection LED). The unit should
ideally be left for 15 minutes in this state to cool down adequately. If the
unit has not fully cooled down then the temperature may reach the limit
soon after the amplifier is powered up.
CAP5 - FIVE WAY PROTECTION SYSTEM

540A/640A Integrated amplifier
13
signal path which can degrade the signal by compressing dynamics. The
CAP5 system operates outside the signal path and when triggered shuts
down the amp rather than limits the size of the signal passing through
the amp (signal compression). V/I protects the amplifier against short
circuits on the speaker terminals during use.
CAP5 has detected that the resistance on the Loudspeaker terminals is
too low. Check to see if there is a short circuit between the Loudspeaker
terminals.
Note: If the indication remains the same and multiple Loudspeakers are
being used on each Loudspeaker output then please remove a pair and
retry. If too many Loudspeakers are connected to any amplifier causing
the Load resistance to drop too low the amplifier will overheat. CAP5 will
detect this situation.
If the indication remains the same with only one set of loudspeakers
connected then there could possibly be a fault with one or both of the
loudspeakers.
CAP5 has detected a user related fault, the internal temperature of the
output transistors has reached the over temperature limit. The unit is not
damaged although it should be left for 15 minutes to cool down before
being switched out of standby.
CAP5 has detected a user related fault, there maybe a short circuit
between the loudspeaker terminals. Please check all Loudspeaker
connections before attempting to switch unit out of standby
CAP5 has detected a fault which requires the unit to be serviced. DC has
been detected on the output of the amplifier which could damage the
speakers. The amplifier is now unusable. Please switch off and contact
dealer.
Protection LED flashes for 4 seconds when unit attempts to come out of
Standby mode.
Unit has switched off during operation. Protection LED constantly ddoouubbllee
ffllaasshheess..
Unit has switched off during operation. Protection LED constantly ffllaasshheess
oonnaannddooffffiinnbbuurrssttssooff44.
Unit has switched off during operation. Protection LED is oonnwwiitthhaabbrriieeff
ooffffffllaasshh.
Indication Fault/Remedy

14
There iisnnoppower
Ensure the AC power cord is connected securely.
Ensure the plug is fully inserted into the wall socket and is switched on.
Check fuse in the mains plug or adaptor
There iisnnossound
Make sure the unit is not in Standby mode
Check that source component is properly connected
Check that 'TAPE MON' is not switched on (unless tape input is required)
Check that your speakers are properly connected
If using Speaker B terminals check they are switched on
If channel LED is flashing turn mute off
There iisnnossound oonoone cchannel
Ensure that balance control is in the correct position
Check speaker connections
Check interconnects
There iisaalloud bbuzz oorhhum
Check turntable or tone arm for ground and connection lead fault
Ensure no interconnects are loose or defective
Ensure that your tape deck/turntable is not too close to the amplifier
Unable ttommake oorpplay ttape rrecordings
Check that TAPE MON and TAPE OUT have been connected correctly
There iiswweak bbass oorddiffused sstereo iimaging
Ensure that speakers are not wired out of phase
Will nnot sswitch oout oofsstandby - pprotection LLED flashing
Please see section on CAP5 protection system
Protection LLED flashing
Please see section on CAP5 protection system (page 12)
TROUBLESHOOTING
Power OOutput
Max PPower
Consumption
Standby PPower
Consumption
THD (unweighted)
Freq RResponse (-33dB)
SttoNNRRatio (unweighted)
Slew RRate (into 88ΩΩ)
Dimensions (HxWxD)
mm
inches
Weight
kg
Lbs
SPECIFICATIONS
540A 640A
100W (into 4Ω)
65W (into 8Ω)
615W
6W
1kHz < 0.005%
20kHz < 0.07%
4Hz - 80kHz
92dB
50V/uS
100 x 430 x 310
3.9 x 16.9 x 12.2
7
15.4
75W (into 4Ω)
50W (into 8Ω)
515W
6W
1kHz < 0.009%
20kHz < 0.09%
5Hz - 50kHz
92dB
30V/uS
100 x 430 x 310
3.9 x 16.9 x 12.2
7
15.4

540A/640A Integrated amplifier
15
Cambridge Audio warrants this product to be free from defects in
materials and workmanship (subject to the terms set forth below).
Cambridge Audio will repair or replace (at Cambridge Audio's option) this
product or any defective parts in this product. Warranty periods may vary
from country to country. If in doubt consult your dealer and ensure that
you retain proof of purchase.
To obtain warranty service, please contact the Cambridge Audio
authorised dealer from which you purchased this product. If your dealer
is not equipped to perform the repair of your Cambridge Audio product,
it can be returned by your dealer to Cambridge Audio or an authorised
Cambridge Audio service agent. You will need to ship this product in
either its original packaging or packaging affording an equal degree of
protection.
Proof of purchase in the form of a bill of sale or receipted invoice, which
is evidence that this product is within the warranty period, must be
presented to obtain warranty service.
This Warranty is invalid if (a) the factory-applied serial number has been
altered or removed from this product or (b) this product was not
purchased from a Cambridge Audio authorised dealer. You may call
Cambridge Audio or your local country Cambridge Audio distributor to
confirm that you have an unaltered serial number and/or you purchased
from a Cambridge Audio authorised dealer.
This Warranty does not cover cosmetic damage or damage due to acts
of God, accident, misuse, abuse, negligence, commercial use, or
modification of, or to any part of, the product. This Warranty does not
cover damage due to improper operation, maintenance or installation,
or attempted repair by anyone other than Cambridge Audio or a
Cambridge Audio dealer, or authorised service agent which is authorised
to do Cambridge Audio warranty work. Any unauthorised repairs will void
this Warranty. This Warranty does not cover products sold AS IS or WITH
ALL FAULTS.
REPAIRS OR REPLACEMENTS AS PROVIDED UNDER THIS WARRANTY
ARE THE EXCLUSIVE REMEDY OF THE CONSUMER. CAMBRIDGE AUDIO
SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL
DAMAGES FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY IN
THIS PRODUCT. EXCEPT TO THE EXTENT PROHIBITED BY LAW, THIS
WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND
IMPLIED WARRANTIES WHATSOEVER INCLUDING, BUT NOT LIMITED TO,
THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PRACTICAL
PURPOSE.
Some countries and US states do not allow the exclusion or limitation of
incidental or consequential damages or implied warranties so the above
exclusions may not apply to you. This Warranty gives you specific legal
rights, and you may have other statutory rights, which vary from state to
state or country to country.
LIMITED WARRANTY

16
Vielen DDank, ddass SSie ssich ffür ddie AAnschaffung eeines CCambridge AAudio-
Verstärkers aaus dder AAzur-SSerie e
entschieden hhaben. DDieses GGerät iist ddas
Resultat uunserer bbis hheute aaufwendigsten FForschung uund EEntwicklung.
Wir wwünschen IIhnen mmit ddiesem EErgebnis llangjährige FFreude.
Einige DDetails
Planung und Entwicklung jedes puristischen Hifi-Verstärker-Konzepts
konzentriert sich im Wesentlichen auf zwei Baugruppen, die
Stromversorgung und eine möglichst effiziente Treiberstufe
(Vorverstärker) zur Ansteuerung der Leistungstransistoren, also der
eigentlichen Endstufe. Dem Cambridge Audio Entwickler-Team ist es
gelungen, in diesen beiden wichtigen Bereichen die bestmögliche
Lösung zu finden, um technisch Machbares in einem bisher nicht
dagewesenen Preis-/Leistungsverhältnis zu realisieren. Die bewährten
Leistungstransistoren der Verstärker Azur 540A / 640A kamen schon in
den äußerst erfolgreichen Vorgänger-Modellen zum Einsatz. Die
vorgeschalteten Verstärker-Stufen wurden jedoch komplett neu
entwickelt.
Auf Grund des überaus durchdachten Layouts, sorgfältig plazierter
Bauteile und kurzer Signalwege ergibt sich eine extrem hohe Stabilität
der Verstärkerschaltung. Kompensationsschaltungen können somit auf
ein Minimum reduziert werden. Verzerrungen können drastisch
reduziert werden. Dynamik und auch die Bandbreite von 80 kHz (!) -
wünschenswert für die hochauflösenden Formate wie DVD-Audio und
SACD - werden den Anforderungen neuer Medien gerecht.
Der Klang und die Performance eines Hifi-Verstärkers werden sehr oft
durch eine begrenzte Dynamik der Stromversorgung limitiert. Kräftige
Ringkern-Transformatoren, parallel geschaltete Speicherkondensatoren
sowie Bypass-Kondensatoren garantieren jederzeit eine saubere,
dynamische Stromversorgung. Dies wiederum ermöglicht ein
kraftvolles, dynamisches Klangbild voller natürlicher Details und Fülle.
Besondere Aufmerksamkeit wurde der Auswahl passiver Bauteile
gewidmet, welche insbesondere nach klanglichen Kriterien ausgewählt
wurden. Im Azur 640A kommen zudem spezielle Polypropylen-
Kondensatoren zum Einsatz, insbesondere an klanglich sensiblen
Punkten im Signalweg.
Hifi-Puristen können das Klangregelnetzwerk des Azur 540A / 640A bei
Bedarf komplett überbrücken. Es wird somit vollständig aus dem
Signalweg entfernt. Der Anschluß eines Kopfhörers ist ebenfalls
möglich. Er wird direkt aus der kraftvollen Endstufe gespeist.
Eine neu entwickelte innovative Schutzschaltung, das Cambridge Audio
CAP5 System , schützt die Verstärker Azur 540A / 640A vor einer
Vielzahl möglicherweise auftretenden Defekte oder Fehlbedienungen.
Dies geschieht durch prozessorgesteuerte Überwachung, ohne
zusätzliche aktive Bauteile im Signalweg.
All unser Wissen und langjährige Erfahrung haben wir in die neue Azur
Generation einfließen lassen. Mit viel Liebe zum Detail entstanden Hifi-
Verstärker, die klanglich wegen ihrer hohen Auflösung und Dynamik
überzeugen. Sie begeistern durch eine lebhafte, fließende Darbietung
jeder Art von Musik. Diese Verstärker beziehen den Hörer ins
Klanggeschehen voll ein!
Um das musikalische Potential dieses Gerätes voll ausschöpfen zu
können, empfehlen wir sehr, bei der Auswahl der übrigen Komponenten
Ihrer Stereoanlage auf ebenso hohe Qualität zu achten. Natürlich raten
EINLEITUNG

540A/640A HIFI-Verstärker
17
wir zu den weiteren Komponenten unserer Cambridge Audio Azur-Line.
Denn diese sind auf demselben hohen Niveau wie Ihr neuer Verstärker
entwickelt worden.
Darüber hinaus sollten Sie auf eine hochwertige Verkabelung Ihrer
Geräte und Lautsprecher achten. Die Verwendung minderwertiger
Verbindungs- und Lautsprecherkabel limitiert die klanglichen
Fähigkeiten Ihres Wiedergabesystems, welches immer nur so gut sein
kann, wie sein schwächstes Glied in der Kette. Aus diesem Grund legen
wir unseren Geräten keine "Billig-Beipack-Kabel" bei. Ihr Händler bietet
Ihnen Cambridge Audio Kabel, die garantieren, dass Ihre Hifi-Anlage ihr
ganzes Potential entfaltet.
Nun lladen wwir SSie eein, ssich zzurückzulehnen uund MMusik eentspannt zzu
genießen!
Matthew Bramble
Technical Director
Einleitung...................................................................................................16
Sicherheitshinweise..................................................................................18
Installation................................................................................................ 19
Anschlüsse auf der Geräterückseite.......................................................20
Hilfe zum Anschluß Ihrer Komponenten..................................................22
Bedienungshinweise.................................................................................24
CAP5 - Schutzschaltung............................................................................26
Problembehandlung.................................................................................28
Technische Daten.....................................................................................28
Haftungsbeschränkung........................................................................... 29
INHALT

18
Überprüfung dder NNetzspannung
Zu Ihrer eigenen Sicherheit bitten wir Sie, die folgenden Hinweise
sorgfältig zu lesen, bevor Sie dieses Gerät mit dem Stromnetz
verbinden.
Stellen Sie sicher, dass die Netzspannungsangabe auf der
Geräterückseite mit der Höhe der Netzspannung vor Ort übereinstimmt.
Nur bei Übereinstimmung ist ein fehlerfreier, sicherer Betrieb
gewährleistet. Der Anschluss an abweichende Netzspannungen als am
Gerät angegeben kann zu erheblichen Beschädigungen führen.
Wird das Gerät über einen längeren Zeitraum nicht benutzt, so sollte es
vom Stromnetz getrennt werden. Verwenden Sie zum Anschluss nur das
beiliegende Netzkabel oder andere hochwertige Kabel mit
Erdungskontakt! Der Kontakt mit der Netzspannung ist
lebensgefährlich! Öffnen Sie niemals das Gehäuse, sondern überlassen
Sie dieses qualifiziertem Servicepersonal.
Dieses Zeichen warnt vor nicht isolierten Bereichen. Bei
unqualifizierter Lightning flash Handhabung besteht die
Gefahr eines elektrischen Schlags.
Wichtige Hinweise sind im Folgenden mit diesem Zeichen
gekennzeichnet:
Dieses Gerät entspricht den europäischen
Standards für Sicherheit (73/23/EEC) und
elektromagnetischer Verträglichkeit (89/336/EEC),
sofern alle Hinweise in dieser Anleitung beachtet
werden. Aus diesem Grunde dürfen bei eventuellen
Reparaturen nur Originalersatzteile von Cambridge Audio
verwendet werden. Bei Nichtbeachtung und/oder Modifikationen
jeglicher Art erlischt jeder Gewährleistungsanspruch!
SICHERHEITSHINWEISE

540A/640A HIFI-Verstärker
19
Bitte nehmen Sie sich einen Moment Zeit, um die folgenden Hinweise zu
lesen, bevor Sie Ihren Azur Verstärker anschließen. Dies wird Ihnen
ermöglichen, sichere Betriebsbedingungen zu schaffen, sowie ein
Optimum an Klang und Leistung zu gewährleisten.
Stellen Sie den Verstärker auf eine feste, ebene Standfläche. Das Gerät
benötigt eine ausreichende Belüftung. Stellen Sie es deshalb nicht auf
einen Teppich oder eine andere weiche Unterlage, und verdecken Sie
nicht die Lüftungsschlitze. Stellen Sie das Gerät nicht in ein
geschlossenes Fach oder in einen geschlossenen Schrank.
Schützen Sie das Gerät vor jeglichem Kontakt mit Wasser oder anderen
Flüssigkeiten. Stellen Sie sicher, daß keine kleineren Gegenstände in
die Belüftungsschlitze fallen können. Sollte solch ein Fall trotzdem
einmal eintreten, schalten Sie bitte das Gerät sofort aus! Ziehen Sie den
Stecker, und fragen Sie gegebenenfalls ihren Händler um Rat.
Verlegen Sie das Netzkabel sorgfältig! Vermeiden Sie, daß andere
Gegenstände oder Geräte darauf stehen oder es beschädigen können.
Da das Netzteil des Verstärkers ein leichtes Magnetfeld erzeugt, sollte
ein eventuell angeschlossener Plattenspieler nicht in unmittelbarer
Nähe stehen.
Wie alle audiophilen Hifi-Produkte benötigt auch Ihr Azur Verstärker eine
gewisse Einspielzeit. Abhängig von der täglichen Betriebsdauer beträgt
diese ca. 1-2 Wochen. Kondensatoren und einige aktive Bauteile
benötigen diese Zeit der "Formatierung", um ihr volles Klangpotential zu
erreichen.
Die Verstärker Azur 540A / 640A können in Betriebspausen, in denen
keine Musik gehört wird, in den Standby Modus geschaltet werden.
Sollte der Verstärker jedoch für längere Zeit nicht benutzt werden,
empfehlen wir die komplette Trennung vom Stromnetz durch
Herausziehen des Netzsteckers aus der Steckdose.
Zur Reinigung des Azur Verstärkers verwenden Sie bitte ein leicht
feuchtes, Fussel freies Tuch. Benutzen Sie niemals aggressive
Reinigungsmittel welche z.B. Alkohol, Ammoniak oder Scheuermittel
enthalten. Benutzen Sie auch keine Sprays am Verstärker, oder in seiner
Nähe.
Es befinden sich keinerlei Einstellungsmöglichkeiten im Inneren des
Gerätes, welche durch den Benutzer verändert werden können, um die
Wiedergabe in irgendeiner Weise zu beeinflussen! Ein eventuell
notwendiger Eingriff in das Gerät sollte ausschließlich autorisiertem
Fachpersonal vorbehalten sein. Versuchen Sie niemals das Gerät zu
öffnen. Der Kontakt mit der Netzspannung ist lebensgefährlich! Bei
Auftauchen eines Problems oder Fehlers wenden Sie sich bitte zuerst an
Ihren Händler.
INSTALLATION

20
230-2240Volt AAnschluß
Bevor Sie den Verstärker mittels des beiliegenden Netzkabels mit dem
Stromnetz verbinden, stellen Sie bitte zunächst alle Verbindungen zu
weiteren Hifi Geräten und den Lautsprechern her. Nach Einstecken des
Netzkabels sollten Sie einen kurzen "Systemcheck" vornehmen. Dabei
werden alle Anzeigen auf der Gerätefront kurz aufleuchten.
Abschließend geht der Verstärker in den Standby Modus und ist nun
betriebsbereit.
Lautsprecher AAnschlüsse
Auf der Rückseite der Azur 540A / 640A Verstärker befinden sich die
Lautsprecher-Anschlüsse A und B. Gruppe A ist die Hauptlautsprecher-
Gruppe und nicht schaltbar. Gruppe B ist mit einem entsprechenden
Schalter an der Gerätefront zu- oder abschaltbar. Verbinden Sie nun die
Lautsprecherkabel entsprechend der Zuordnung zu Ihren
Lautsprechern mit den Terminals Right (Rechts) + & - und Left (Links) +
& - der Lautsprechergruppe A und/oder B. Achten Sie bitte besonders
auf gute und feste Verbindungen, und stellen Sie sicher das kein
Kurzschluß zwischen + & - bzw. von den Anschlüssen zur
Geräterückwand entstehen kann. Gute Lautsprecherkabel und
Kontakte verbessern den Klang und die Leistungsfähigkeit Ihres
Verstärkers!
Achtung: DDie AAzur 5540A //6640A VVerstärker ssind ffür LLautsprecher-
Impedanzen vvon 44-88OOhm aausgelegt. E
Entsprechende HHinweise bbefinden
sich iindder RRegel aauf ddem AAnschlußfeld IIhrer LLautsprecher. IIm
Zweifelsfall zziehen SSie bbitte IIhren HHändler zzuRRate.
Achtung: AAlle iimFFolgenden bbeschriebenen AAnschlüsse ssind a
analoge EEin-
bzw. AAusgänge uund ddürfen nnie mmit ddigitalen AAus- bbzw. EEingängen
verschiedener GGeräte vverbunden wwerden!
T
ape In
R
ec Out 1
R
ec Out
2
T
ape In
R
ec Out 1
Rec Out
2
M
ax Power Consum
p
tion
:
615W
P
re-Out
Pre-Out
I
mpedance
4
- 8 ohms
Impedance 4 - 8 ohms
L
oudspeaker Terminals
Loudspeaker Terminals
Important
Important
P
lease ensure that loudspeaker terminals are fully tightened
Please ensure that loudspeaker terminals are fully tightened
Veuillez s'assurer que les bornes de l'enceinte sont entierement serreesVeuillez s'assurer que les bornes de l'enceinte sont entierement serrees
I
mpedance 4 - 8 ohms
Impedance 4 - 8 ohms
R
ight
Right
L
eft
Left
R
ight
Right
L
eft
Left
Left
Left
B
B
A
A
R
ight
Right
L
eft
Left
R
ight
Right
B
B
A
A
AV / MD
AV / MD
DVD
DVD
T
uner / DAB
Tuner / DAB
CD
CD
Aux / Phon
o
Aux / Phono
P
re-Out
Pre-Out
AV / MD
AV / MD
D
VD
DVD
Tuner / DAB
Tuner / DAB
C
D
CD
A
ux / Phono
Aux / Phono
R
ight
Right
L
eft
Left
Ri
g
h
t
Right
L
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Left
Groun
d
Ground
w
ww.cambridge-audio.co.u
k
www.cambridge-audio.co.uk
M
anufactured in an
Manufactured in an
I
SO900
2
ISO9002
approved facility
approved facility
P
ower A
C
Power AC
D
esigned and Engineered in London, England
Designed and Engineered in London, England
R
isk of electric shoc
k
Risk of electric shock
D
o not ope
n
Do not open
C
aution
Caution
Ris
q
ue de choc electri
q
ue
Risque de choc electrique
Ne
p
as ouvrir
Ne pas ouvrir
Avis
Avis
Vorm offnen des geratesVorm offnen des gerates
N
etzstecker ziehen
Netzstecker ziehen
Achtung
Achtung
a
zur 6
4
0A Integrated Amplifie
r
azur 640A Integrated Amplifier
Power Rating:
Power Rating:
230V AC 50Hz
230V AC 50Hz
ANSCHLÜSSE AUF DER GERÄTERÜCKSEITE