Cambridge Audio Stereo Amplifier Azur 840W User Manual

azur 840W  
Class XD power amplifier  
User’s manual  
2
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azur 840W  
Limited warranty  
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.  
Ventilation  
IMPORTANT - The unit will become hot when in use. Do not stack  
multiple units on top of each other. Do not place in an enclosed area  
such as a bookcase or in a cabinet without sufficient ventilation.  
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.  
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.  
Positioning  
Choose the installation location carefully. Avoid placing it in direct  
sunlight or close to a source of heat. No naked flame sources, such as  
lighted candles, should be placed on the unit. Also avoid locations  
subject to vibration and excessive dust, cold or moisture. The unit can  
be used in a moderate climate.  
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 unit must be installed on a sturdy, level surface. Do not place in a  
sealed area such as a bookcase or in a cabinet. Any space open at the  
back (such as a dedicated equipment rack) is fine however. Do not place  
the unit on an unstable surface or shelf. The unit may fall, causing  
serious injury to a child or adult as well as serious damage to the  
product. Do not place other equipment on top of the unit.  
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.  
Due to stray magnetic fields turntables or CRT TVs should not be located  
nearby due to possible interference.  
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.  
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.  
Power sources  
The unit should be operated only from the type of power source  
indicated on the marking label. If you are not sure of the type of power-  
supply to your home, consult your product dealer or local power  
company.  
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.  
This unit 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). To turn the unit off completely switch off on the rear panel.  
If you do not intend to use this unit for a long period of time, unplug it  
from the mains socket.  
Overloading  
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.  
Do not overload wall outlets or extension cord as this can result in a risk  
of fire or electric shock. Overloaded AC outlets, extension cords, frayed  
power cords, damaged or cracked wire insulation, and broken plugs are  
dangerous. They may result in a shock or fire hazard.  
Be sure to insert each power cord securely. To prevent hum and noise, do  
not bundle the interconnect leads with the power cord or speaker leads.  
Cleaning  
Plug Fitting Instructions (UK Only)  
To clean the unit, wipe its case with a dry, lint-free cloth. Do not use any  
cleaning fluids containing alcohol, ammonia or abrasives. Do not spray  
an aerosol at or near the unit.  
The cord supplied with this appliance is factory fitted with a UK mains plug fitted  
with a 13 amp fuse inside. If it is necessary to change the fuse, it is important that  
a 13 amp 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 mains 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:  
Battery disposal  
Please dispose of any discharged batteries according to local  
environmental/electronic waste disposal guidelines.  
Loudspeakers  
Before making any connections to loudspeakers, make sure all power is  
turned off and only use suitable interconnects.  
The wire which is coloured BLUE must be  
connected to the terminal which is marked  
with the letter ‘N’ or coloured BLACK.  
Servicing  
The wire which is coloured BROWN must be  
connected to the terminal which is marked  
with the letter ‘Lor coloured RED.  
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.  
The wire which is coloured GREEN/YELLOW  
must be connected to the terminal which is  
marked with the letter ‘E’ or coloured GREEN.  
If a standard 13 amp (BS 1363) plug is used, a 13 amp fuse must be fitted, or if  
any other type of plug is used a 5 amp fuse must be fitted, either in the plug or  
adaptor, or on the distribution board.  
3
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Contents  
Introduction  
Important safety instructions.....................................................................2  
Limited warranty..........................................................................................3  
Contents.......................................................................................................4  
Introduction .................................................................................................4  
Rear panel connections..............................................................................5  
Front panel controls....................................................................................6  
Connections.................................................................................................7  
Unbalanced stereo connections .....................................................7  
Balanced stereo connections..........................................................7  
Power syncing...................................................................................7  
Advanced connections................................................................................8  
Bi-wired stereo connections............................................................8  
Bi-amped dual mono connections..................................................9  
Bridged dual mono connections.....................................................9  
Custom installation use............................................................................10  
Technical specifications ...........................................................................10  
Troubleshooting.........................................................................................11  
Thank you for purchasing this Azur 840W Class XD™ power amplifier.  
We hope that you will enjoy many years of listening pleasure from it.  
The 840W features our unique proprietary amplifier topology; Class XD,  
designed to eliminate crossover distortion at low signal levels.  
By actively displacing the crossover point this technology creates a  
region of pure Class-A operation where the crossover zone would  
otherwise be before moving into an enhanced form of Class B at higher  
levels. It should not be confused with Class AB, which gives a small area  
of Class A, but at the cost of higher distortion as soon as the signal level  
moves outside the AB area. Class XD circuitry not only removes  
crossover distortion from the zero-crossing point but also reduces  
distortion in other parts of the amplifier's output range.  
A white paper on this patent pending technology is available on our  
Please note that because of the Class XD technology the 840W runs  
slightly warmer than a conventional Class B/AB amplifier and the  
ventilation slots on the top of the unit must not be obstructed.  
Other features include a low resonance acoustically damped chassis for  
freedom from distortion inducing vibrations. Four pairs of very high  
current output transistors per output are used for excellent load driving  
ability, plus the unique fifth output transistor pair per channel that  
provides the business end of the Class XD circuitry. High quality  
polypropylene signal capacitors are used throughout, whilst multiple  
gold plated copper bus-bars provide very low impedance conduits for the  
power circuits and all resistors are 1% tolerance metal-film types.  
Balanced audio input connections are fitted for the highest fidelity and  
all inputs have loop outputs. The loop outputs can be used with the  
840W’s Bi-Amp Mono and Bridged-Mono modes to allow two or more  
840Ws to be used in very high quality systems.  
The 840W features separate transformer secondaries for left and right  
channels, twin rectifiers and separate PSUs for dual mono operation of  
the left and right power amplifiers.  
Your power amplifier can only be as good as the system it is connected  
to. Please do not compromise on your pre-amplifier, source equipment,  
speakers or cabling. Naturally we recommend models from the  
Cambridge Audio Azur range, particularly the matching 840E pre-  
amplifier. These have been designed to the same exacting standards as  
this amplifier. Your dealer can also supply excellent quality Cambridge  
Audio interconnects to ensure your system realises its full potential.  
Thank you for taking the time to read this manual; we do recommend  
you keep it for future reference.  
Matthew Bramble,  
Cambridge Audio Technical Director  
and the 840E/840W design team  
hardware and software releases.  
This guide is designed to make installing and using this product as easy as  
possible. Information in this document has been carefully checked for accuracy at  
the time of printing; however, Cambridge Audio's policy is one of continuous  
improvement, therefore design and specifications are subject to change without  
prior notice. If you notice any errors please feel free to email us at:  
This document contains proprietary information protected by copyright. All rights  
are reserved. No part of this manual may be reproduced by any mechanical,  
electronic or other means, in any form, without prior written permission of the  
manufacturer. All trademarks and registered trademarks are the property of their  
respective owners.  
Class XD Technology International Patent Pending Cambridge Audio Ltd.  
© Copyright Cambridge Audio Ltd 2007  
4
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azur 840W  
Rear panel connections  
Loudspeaker Terminals - Right  
Impedance 4 - 8 ohms  
Loudspeaker Terminals - Left  
Impedance 4 - 8 ohms  
IMPORTANT!  
Only change modes  
Designed in London, England  
when unit is off.  
Please ensure that loudspeaker terminals are fully tightened  
Please ensure that loudspeaker terminals are fully tightened  
1
1
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
TM  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Refer to Manual for  
more information.  
azur 840W Class XD Power Amplifier  
In  
Stereo  
Control Bus  
Out  
5
7
Mono  
Bridged  
only!  
Bridged  
only!  
On  
Off  
11  
Power AC  
10  
Class 2 Wiring  
Class 2 Wiring  
In  
Mono Mode  
Bi-Amp  
Trigger  
Out/Thru  
8
9
6
B
ridged
Use Left Input for  
Balanced Audio - Right  
Unbalanced  
Audio - Right  
Input  
IR Emitter  
In  
Unbalanced  
Audio - Left  
Input  
Balanced Audio - Left  
Bridged Bi-Amp  
/
operation.  
Input  
Loop Output  
Input  
Loop Output  
Right  
Input Type  
Balanced  
Left  
In  
Loop  
In  
Loop  
Input Type  
Balanced  
Power Rating: 220 - 230V AC ~ 50/60Hz  
Max Power Consumption: 2400W  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
N1863  
Unbalanced  
Unbalanced  
Loop Output  
Loop Output  
CAUTION  
AVIS  
ACHTUNG  
Manufactured in an ISO9001 apcility  
with part 15 of the FCC Rules. Operatioct to the following two conditions:  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
2
3
4
4
This device  
3
2
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
46  
1) This device may not cause harmfurference  
2) This device must accept any interference, including interference that may cause undesired operation  
1
6
Loudspeaker terminals  
Mono mode switch  
For normal wiring, connect the wires from your left channel loudspeaker  
to the LEFT + & - terminals, and 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 output.  
When Mono mode has been selected, switches the 840W between Bi-  
Amped Mono and Bridged Mono. Refer to later sections of this manual  
for more information.  
7
Control Bus  
Other dual mono schemes are also possible if two 840Ws are used.  
Refer to later sections of this manual for more information.  
In - Allows un-modulated commands from multi-room systems or other  
components to be received by the unit.  
Use speakers with a nominal impedance of between 4-8 ohms. Care  
should be taken to ensure no stray strands of wire short the  
loudspeaker outputs together. Please ensure that the loudspeaker  
terminals have been tightened completely to provide a good electrical  
connection. It is also possible for the sound quality to be affected if the  
screw terminals are loose.  
Out - Loop out for Control Bus commands to another unit.  
The 840W can also be switched between On and Standby mode by  
connecting the Control Bus output of an 840E pre-amplifier to the  
Control Bus input of the 840W. Refer to the ‘Power syncing’ section of  
this manual for more information.  
Audio input types  
8
Trigger In, Out/Thru  
The 840W features either unbalanced (phono/RCA) or balanced (XLR)  
input connections. Either type may be used but not both at the same  
time. The balanced connection is the higher quality option and can  
reject noise and interference in the cable when used with other  
equipment that supports this function. An XLR connector is wired Pin 1  
- Ground; Pin 2 - Hot (in-phase); Pin 3 - Cold (phase-inverted).  
For Custom Install use, the 840W can be turned on and off (i.e. brought  
in and out of Standby mode) by the presence of 5-12V DC at the Trigger  
input. A trigger input will also produce an internally generated 12V DC  
trigger output at the Output/Thru connection. Turning the 840W on from  
the front panel also produces a 12V DC trigger output at the  
Output/Thru connection. This can be used to turn on/Standby other  
connected power amplifiers or other equipment if desired. Refer to the  
‘Power syncing’ section of this manual for more information.  
Use the Left and Right Input Type switch (Item 4) to select the  
connection type you wish to use. When using either the balanced or  
unbalanced input, make sure that no cables or equipment are  
connected to the unused input, as this may degrade operation. The  
unused input does not need to be terminated and this should not be  
done.  
9
IR (Infra-Red) Emitter In  
Allows modulated IR commands from multi-room systems or IR repeater  
systems to be received by the unit. Commands received here are not  
looped out of the Control Bus. Refer to the ‘Custom installation’ section  
for more information.  
2
Balanced Audio  
For connection to the balanced XLR outputs of suitable pre-amplifiers  
that have this kind of output (such as our own 840E model). The pre-  
amplifier used should be capable of providing at least 1V rms of output  
per phase (i.e. at both of + and – terminals of the XLR, more is also  
fine). Nearly all modern pre-amplifiers fulfill this requirement.  
10  
AC power socket  
Once you have completed all connections to the unit, plug the AC power  
cable into an appropriate mains socket then switch on. Your unit is now  
ready for use.  
3
Unbalanced Audio  
11  
Power On/Off  
For connection to the normal (single ended) RCA/Phono outputs of a  
suitable pre-amplifier (such as our own 840E model). The pre-amplifier  
used should be capable of providing at least 1V rms of output (more is  
fine). Nearly all modern pre-amplifiers fulfil this requirement.  
Switches the unit on and off. If the 840W is not going to be used for long  
periods of time it should be turned off using this switch.  
4 Input Type switch  
Use to select a balanced or unbalanced connection type for the input.  
5
Stereo/Mono mode switch  
Switches the 840W between ‘normal’ Stereo operation (where one  
840W is used for a pair of speakers) and Mono operation (where two  
840W’s are used one for each speaker). Refer to later sections of this  
manual for more information.  
5
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Front panel controls  
azur 840W  
Class XD Power Amplifier  
Left  
Protection  
3
Right  
Protection  
3
1
Standby /On  
Output  
Clipping  
Bridged  
Mono  
Output  
Clipping  
2
4
5
6
2
4
1
Standby/On  
LED indicators  
Stereo output:  
Switches the unit between Standby mode (indicated by dim power LED)  
and On (indicated by bright power LED). Standby mode is a low power  
mode where the power consumption is less than 10 Watts. The unit  
should be left in Standby mode when not in use.  
azur 840W  
Class XD Power Amplifier  
Left  
Right  
When the 840W is switched out of Standby mode it will automatically  
check for faults and allow the power amplifier stages to stabilise before  
un-muting the speaker outputs.  
Standby / On  
Output  
Protection  
Clipping  
Bridged  
Mono  
Output  
Protection  
Clipping  
Bridged  
Bridged  
Bridged  
Mono  
Mono  
Mono  
Note: The protection LEDs will flash whilst this check is being done.  
Mono output:  
2
Output  
Indicates that the Left or Right output is active. The LED (light-emitting  
diode) is on for an active output, off for inactive (i.e. muted).  
azur 840W  
Class XD Power Amplifier  
Left  
Right  
Standby / On  
Output  
Protection  
Clipping  
Bridged  
Mono  
Output  
Protection  
Clipping  
3
Protection  
If this LED is constantly on the 840W has detected a fault on either the  
Left or Right channel and is protecting itself.  
Bridged Mono output:  
4
Clipping  
This LED indicates that the 840W has detected that either the Left or  
Right channel is being overdriven or clipped.  
azur 840W  
Class XD Power Amplifier  
Clipping distortion is caused at high volume levels when the output  
signal attempts to go outside the maximum voltage that the connected  
pre-amplifier can provide, causing the tops of the signal to flatten off.  
Left  
Right  
Standby / On  
Output  
Protection  
Clipping  
Bridged  
Mono  
Output  
Protection  
Clipping  
Clipping  
When the 840W detects clipping this LED will briefly flash. If the clipping  
reaches a dangerous amount that could damage the amplifier or  
attached speakers the unit will then go into protection.  
5
Bridged  
This LED indicates that the 840W is being used in Bridged mode. (The  
Mono LED will also be illuminated.)  
6
Mono  
This LED indicates that the 840W is being used in a Mono mode.  
6
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azur 840W  
Connections  
The 840W features both balanced (XLR) and unbalanced (RCA/Phono) output connections. For the best quality we recommend you use the balanced  
output with pre-amplifiers that feature this connection (such as our own 840E Pre-Amplifier).  
Before making any connections to loudspeakers, make sure all power is turned off and only use suitable interconnects (e.g. banana plugs). Ensure that  
the positive (+) and negative (-) connections are matched. Your loudspeaker may have more than one pair of connecting terminals; LF (Low Frequency)  
and HF (High Frequency). For single-wiring it is recommended to connect to the LF terminals. The metal strip connecting the low-frequency terminals to  
the high-frequency terminals must not be removed (only to be removed for a bi-wiring system).  
Unbalanced stereo connections  
The diagram below shows the 840W connected to an 840E using the  
Unbalanced Audio inputs via phono/RCA connectors, single wired to a  
pair of loudspeakers.  
When using unbalanced (phono/RCA) connections, the Left and Right  
Input Type switches on the 840W must be in the ‘Unbalanced’ position.  
Note: In this configuration the 840W must be set to Stereo mode.  
840E  
Multi-Room  
Input  
2
Balanced Audio  
Input  
1
Balanced Audio  
Keypad  
1
IR1  
IR3  
GND  
International Patent Pending  
LeisureTech Electronics Pty Ltd  
Power  
Trigger  
Out/Thru  
IR Emitter  
In  
Control Bus  
In Out  
Designed in London, England  
In  
PSU  
In  
azur 840E Pre-Amplifier  
On  
Off  
Power Rating: 220  
-
230V AC  
~
50/60Hz  
Max Power Consumption: 36W  
CAUTION  
AVIS  
ACHTUNG  
Keypad  
2
IR2  
IR4  
Right  
p u I n t  
Left  
Right  
Left  
p u I n t  
Balanced  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
P r e O u t  
c e  
O
R u t  
2
c e  
O
R u t  
1
n
I c R e  
p u I n t  
7
p u I n t  
6
5
p u I n t  
4
p u I n t  
3
p u I n t  
2
1
Balanced Pre Out  
Flat / 200Hz L.P.  
L
Unbalanced  
Input  
L
L
1
Balanced  
R
R
R
Power AC  
Unbalanced  
GND  
Input  
2
Pre Out  
Right  
Left  
Sub Out  
Rec Out  
2
Rec Out  
1
Rec In  
Input  
7
Input  
6
Input  
5
Input  
4
Input  
3
Input  
2
Input  
1
Manufactured  
in an ISO9001  
approved facility  
(Unbalanced)  
(Unbalanced)  
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terminals  
-
Left  
IMPORTANT!  
Impedance  
4
-
8
ohms  
Impedance ohms  
4
-
8
Only change modes  
Designed in London, England  
when unit is off.  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
TM  
Refer to Manual for  
more information.  
azur 840W Class XD Power Amplifier  
In  
Stereo  
Control Bus  
Out  
Bridged  
only!  
Mono  
Bridged  
only!  
Class  
2
Wiring  
Class  
2
Wiring  
In  
Mono Mode  
Bi-Amp  
Trigger  
Out/Thru  
B
rid
g
e
d
Use Left Input for  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Bridged Bi-Amp  
/
Audio  
-
Right  
operation.  
Audio Left  
-
Loop Output  
Input  
Input  
Right  
Input Type  
Left  
Input Type  
In  
Loop  
In  
Loop  
Balanced  
Balanced  
P
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
N1863  
Unbalanced  
Unbalanced  
Loop Output  
Loop Output  
CAUTION  
AVIS  
ACHTUNG  
Manufactured in an ISO9001 approved facility  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:  
1) This device may not cause harmful interference  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
46  
2) This device must accept any interference, including interference that may cause undesired operation  
840W  
Balanced stereo connections  
The diagram below shows the 840W connected to an 840E using the  
Balanced Audio inputs via three-pin XLR connectors, single wired to a  
pair of loudspeakers.  
When using balanced (XLR) connections, the Left and Right Input Type  
switches on the 840W must be in the ‘Balanced’ position.  
Note: In this configuration the 840W must be set to Stereo mode.  
840E  
Multi-Room  
Input  
2
Balanced Audio  
Input  
1
Balanced Audio  
Keypad  
1
IR1  
IR3  
GND  
International Patent Pending  
Power  
Trigger  
Out/Thru  
IR Emitter  
In  
Control Bus  
LeisureTech Electronics Pty Ltd  
Designed in London, England  
In  
In  
Out  
PSU  
In  
azur 840E Pre-Amplifier  
On  
Off  
Power Rating: 220  
-
230V AC  
~
50/60Hz  
Max Power Consumption: 36W  
CAUTION  
AVIS  
ACHTUNG  
Keypad  
2
IR2  
IR4  
Right  
p u I n t  
Left  
Right  
Left  
p u I n t  
Balanced  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
P r e O u t  
L
c e  
O
R u t  
2
c e  
O
R u t  
1
n
I c R e  
p u I n t  
7
p u I n t  
6
5
p u I n t  
4
p u I n t  
3
p u I n t  
2
1
Balanced Pre Out  
Flat  
/
200Hz L.P.  
L
Unbalanced  
Input  
L
L
1
Balanced  
R
R
R
R
Power AC  
Unbalanced  
GND  
Input  
2
Pre Out  
Sub Out  
Rec Out  
2
Rec Out  
1
Rec In  
Input  
7
Input  
6
Input  
5
Input  
4
Input  
3
Input  
2
Input  
1
Manufactured  
in an ISO9001  
approved facility  
(Unbalanced)  
(Unbalanced)  
lpart 1f ion is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terminals  
-
Left  
IMPORTANT!  
Impedance  
4
-
8
ohms  
Impedance ohms  
4
-
8
Only change modes  
Designed in London, England  
when unit is off.  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
TM  
Refer to Manual for  
more information.  
azur 840W Class XD Power Amplifier  
In  
Stereo  
Control Bus  
Out  
Bridged  
only!  
Mono  
Bridged  
only!  
Class  
2
Wiring  
Class  
2
Wiring  
In  
Mono Mode  
Bi-Amp  
Trigger  
Out/Thru  
B
rid
g
e
d
Use Left Input for  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Bridged Bi-Amp  
/
Audio  
-
Right  
operation.  
Audio Left  
-
Loop Output  
Input  
Input  
Right  
Input Type  
Left  
Input Type  
In  
Loop  
In  
Loop  
Balanced  
Balanced  
P
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
N1863  
Unbalanced  
Unbalanced  
Loop Output  
Loop Output  
CAUTION  
AVIS  
ACHTUNG  
Manufaroved facility  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
This device complies with part 15 of tis subject to the following two conditions:  
1) This deul interference  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
46  
2) This device must accept any interlence that may cause undesired operation  
840W  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
Power syncing (On/Standby control)  
When going in/out of Standby mode the Azur 840E pre-amplifier can (if  
desired) automatically control the 840W when connected via the Control  
Bus sockets (the Control Bus sockets are colour-coded orange on the  
rear panels of compatible Azur models). For this feature to work the  
units must be connected together by RCA/phono leads. No further setup  
is necessary.  
Note: The 840E features a Trigger Out which can alternatively be used  
to control the 840W’s Standby/On status if desired. Again, the  
procedure is simply to connect the two units together (using a 3.5mm to  
3.5mm mono mini-jack lead in this case).  
Control Bus is the recommended method when using an 840E and other  
Cambridge Audio equipment with Control Bus In/Out.  
Connect the Control Bus Out from the 840E to the Control Bus In on the  
840W. Continue the chain to other Azur models if it is required to sync  
more units (refer to the 840E’s own manual for more information as this  
requires some setup).  
Trigger In/Out can be useful if the 840W (and indeed 840E) is desired  
to be controlled by other equipment that features trigger outputs  
(Custom install and/or Multi-Room Systems etc).  
840W  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terminals Left  
-
IMPORTANT!  
Impedance  
4
-
8
ohms  
Impedance  
4
-
8
ohms  
Only change modes  
Designed in London, England  
when unit is off.  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
TM  
Refer to Manual for  
more information.  
azur 840W Class XD Power Amplifier  
In  
Stereo  
Control Bus  
Out  
Bridged  
only!  
Mono  
Bridged  
only!  
On  
Off  
Class  
2
Wiring  
Class  
2
Wiring  
In  
Mono Mode  
Bi-Amp  
Trigger  
Out/Thru  
Power AC  
B
Brridid  
g
g
e
e
d
d
Use Left Input for  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Bridged Bi-Amp  
/
Audio  
-
Right  
operation.  
Audio Left  
-
Loop Output  
Input  
Input  
Right  
Input Type  
Left  
Input Type  
In  
Loop  
In  
Loop  
Balanced  
Balanced  
Power Rating: 230V AC  
~
50Hz  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
Max Power Consumption: 1600W  
N1863  
Unbalanced  
Unbalanced  
Loop Output  
Loop Output  
CAUTION  
AVIS  
ACHTUNG  
Manufactured in an ISO9001 approved facility  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:  
1) This device may not cause harmful interference  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
46  
2) This device must accept any interference, including interference that may cause undesired operation  
Multi-Room  
Input  
2
Balanced Audio  
Input  
1
Balanced Audio  
840E  
Keypad  
1
IR1  
IR2  
IR3  
IR4  
GND  
International Patent Pending  
Power  
Trigger  
IR Emitter  
In  
Control Bus  
LeisureTech Electronics Pty Ltd  
Designed in London, England  
In  
Out/Thru  
In  
Out  
PSU  
In  
azur 840E Pre-Amplifier  
On  
Off  
Power Rating: 230V AC  
~
50Hz  
Max Power Consumption: 36W  
CAUTION  
AVIS  
ACHTUNG  
Keypad  
2
Right  
p u I n t  
Left  
Right  
Left  
p u I n t  
Balanced  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
P r e O u t  
L
c e  
O
R u t  
2
c e  
O
R u t  
1
n
I c R e  
p u I n t  
7
p u I n t  
6
5
p u I n t  
4
p u I n t  
3
p u I n t  
2
1
Balanced Pre Out  
Flat  
/
200Hz L.P.  
L
Unbalanced  
Input  
L
L
1
Balanced  
R
R
R
R
Power AC  
Unbalanced  
GND  
Input  
2
Pre Out  
Right  
Left  
Sub Out  
Rec Out  
2
Rec Out  
1
Rec In  
Input  
7
Input  
6
Input  
5
Input  
4
Input  
3
Input  
2
Input  
1
Manufactured  
in an ISO9001  
approved facility  
(Unbalanced)  
(Unbalanced)  
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.  
Advanced connections  
As well as normal single-wired stereo operation (whether balanced or unbalanced), several other modes of operation are possible; Bi-wired Stereo, Bi-  
Amped Mono and Bridged Mono and others.  
In all of the following examples either balanced or unbalanced connections can be used, the principle is exactly the same for each type of connection.  
For simplicity, we will show only the balanced connections in each example.  
Bi-wired stereo connections  
The diagram below shows the 840W connected to an 840E bi-wired to  
a pair of loudspeakers.  
Note: In this configuration the 840W must be set to Stereo mode.  
IMPORTANT! The metal strip connecting the low-frequency terminals to  
the high-frequency terminals must be removed for a bi-wiring system.  
840E  
Multi-Room  
Input  
2
Balanced Audio  
Input  
1
Balanced Audio  
Keypad  
1
IR1  
IR3  
GND  
International Patent Pending  
LeisureTech Electronics Pty Ltd  
Power  
Trigger  
Out/Thru  
IR Emitter  
In  
Control Bus  
In Out  
Designed in London, England  
In  
PSU  
In  
azur 840E Pre-Amplifier  
On  
Off  
Power Rating: 220  
-
230V AC  
~
50/60Hz  
Max Power Consumption: 36W  
CAUTION  
AVIS  
ACHTUNG  
Keypad  
2
IR2  
IR4  
Right  
p u I n t  
Left  
Right  
Left  
p u I n t  
Balanced  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
P r e O u t  
L
c e  
O
R u t  
2
c e  
O
R u t  
1
n
I c R e  
p u I n t  
7
p u I n t  
6
5
p u I n t  
4
p u I n t  
3
p u I n t  
2
1
Balanced Pre Out  
Flat / 200Hz L.P.  
L
Unbalanced  
Input  
L
L
1
Balanced  
R
R
R
R
Power AC  
Unbalanced  
GND  
Input  
2
Pre Out  
Sub Out  
Rec Out  
2
Rec Out  
1
Rec In  
Input  
7
Input  
6
Input  
5
Input  
4
Input  
3
Input  
2
Input  
1
Manufactured  
in an ISO9001  
approved facility  
(Unbalanced)  
(Unbalanced)  
lpart 1f ion is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terminals  
-
Left  
IMPORTANT!  
Impedance  
4
-
8
ohms  
Impedance ohms  
4
-
8
Only change modes  
Designed in London, England  
when unit is off.  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
TM  
Refer to Manual for  
more information.  
azur 840W Class XD Power Amplifier  
In  
Stereo  
Control Bus  
Out  
Bridged  
only!  
Mono  
Bridged  
only!  
Clas
iring  
Clas
ing  
In  
Mono Mode  
Bi-Amp  
Trigger  
Out/Thru  
B
rid
g
e
d
Use Left Input for  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Bridged Bi-Amp  
/
Audio  
-
Right  
operation.  
Audio Left  
-
Loop Output  
Input  
Input  
Right  
Input Type  
Left  
Input Type  
In  
Loop  
In  
Loop  
Balanced  
Balanced  
P
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
N1863  
Unbalanced  
Unbalanced  
Loop Output  
Loop Output  
CAUTION  
AVIS  
ACHTUNG  
Manufaroved facility  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
This device complies with part 15 of tis subject to the following two conditions:  
1) This deul interference  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
46  
2) This device must accept any interlence that may cause undesired operation  
840W  
8
Download from Www.Somanuals.com. All Manuals Search And Download.  
azur 840W  
Bi-amped dual mono connections  
The 840W features Mono and Bi-Amped Mono settings that allow two  
(or more) 840Ws to be used as mono-blocs for high end systems. Below  
is an example using two 840Ws in Bi-Amped Mono with an 840E.  
Important 840W settings  
Only use the Left Inputs on the 840W for Bi-Amped operation.  
In this configuration the Stereo/Mono switch on the 840W must be set  
to ‘Mono’ and the Mono mode switch must be set to ‘Bi-Amp’.  
In Bi-Amped Mono mode each 840W drives one speaker.  
The metal strip connecting the low-frequency terminals to the high-  
frequency loudspeaker terminals must be removed.  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terminals  
-
Left  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terit  
IMPORTANT!  
IMPORTANT!  
Impedance  
4
-
8
ohms  
Impedance  
4
-
8
ohms  
Impedance  
4
-
8
ohms  
Impedance  
4
-
8
ohm
Only change modes  
Only change modes  
Designed in London, England  
Designed in London, England  
when unit is off.  
when unit is off.  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tight
Veuillez s'assurer que les bornes de l'enceinte sont entièrement ser
840W  
840W  
TM  
TM  
Refer to Manual for  
more information.  
Refer to Manual for  
more information.  
azur 840W Class XD Power Amplifier  
azur 840W Class XD Power Amplifier  
In  
In  
Stereo  
Stereo  
Control Bus  
Out  
Control Bus  
Out  
Bridged  
only!  
Mono  
Bridged  
only!  
Bridged  
only!  
Mono  
Bridged  
only!  
On  
Off  
On  
Off  
Class  
2
Wiring  
Class  
2
Wiring  
Class  
2
Wiring  
Class  
2
Wiring  
In  
In  
Mono Mode  
Bi-Amp  
Mono Mode  
Bi-Amp  
Trigger  
Out/Thru  
Trigger  
Out/Thru  
Power AC  
Power AC  
B
Brridid  
g
g
e
e
d
d
B
Brridid  
g
g
e
e
d
d
Use Left Input for  
Use Left Input for  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Bridged Bi-Amp  
/
Bridged Bi-Amp  
/
Audio  
-
Right  
operation.  
Audio  
-
Left  
Audio  
-
Right  
operation.  
Audio Left  
-
Loop Output  
Loop Output  
Input  
Input  
Input  
Input  
Right  
Input Type  
Left  
Input Type  
Right  
Input Type  
Left  
Input Type  
In  
Loop  
In  
Loop  
In  
Loop  
In  
Loop  
Balanced  
Balanced  
Balanced  
Balanced  
Power Rating: 220  
-
230V AC  
~
50/60Hz  
Power Rating: 220  
-
230V AC  
~
50/60Hz  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
Max Power Consumption: 2400W  
Max Power Consumption: 2400W  
N1863  
N1863  
Unbalanced  
Unbalanced  
Unbalanced  
Unbalanced  
Loop Output  
Loop Output  
Loop Output  
Loop Output  
CAUTION  
AVIS  
ACHTUNG  
CAUTION  
AVIS  
ACHTUNG  
Manufacroved facility  
ManufIoved facility  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
This device complies with part 15 of tis subject to the following two conditions:  
1) This devul interference  
Thidevice complies with part 15 os subject to the following two conditions:  
1) This dul interference  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
46  
46  
2) This device must accept any interfence that may cause undesired operation  
2) Thdevice must accept any inte, nce that may cause undesired operation  
Stereo  
Mono  
Stereo  
Mono  
Multi-Room  
Input  
2
Balanced Audio  
Input  
1
Balanced Audio  
Keypad  
1
IR1  
IR2  
IR3  
IR4  
GND  
International Patent Pending  
LeisureTech Electronics Pty Ltd  
Power  
Trigger  
IR Emitter  
In  
Control Bus  
Designed in London, England  
In  
Out/Thru  
In  
Out  
PSU  
In  
azur 840E Pre-Amplifier  
Power Rating: 220 230V AC 50/60Hz  
On  
Off  
-
~
Mono Mode  
Bi-Amp  
Mono Mode  
Bi-Amp  
Max Power Consumption: 36W  
CAUTION  
AVIS  
ACHTUNG  
Keypad  
2
Right  
p u I n t  
Left  
Right  
Left  
p u I n t  
Balanced  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
P r e O u t  
c e  
O
R
u t  
2
c e  
O
R
u t  
1
n
I c R e  
p u I n t  
7
p u I n t  
6
5
p u I n t  
4
p u I n t  
3
p u I n t  
2
1
Balanced Pre Out  
Flat  
/
200Hz L.P.  
B
Brrididggeedd  
B
Brrididggeedd  
L
L
Unbalanced  
Input  
L
L
1
Balanced  
Use Left Input for  
Use Left Input for  
Bridged Bi-Amp  
/
Bridged Bi-Amp  
/
R
R
R
R
operation.  
operation.  
Power AC  
Unbalanced  
GND  
Input  
2
Pre Out  
Sub Out  
Rec Out  
2
Rec Out  
1
Rec In  
Input  
7
Input  
6
Input  
5
Input  
4
Input  
3
Input  
2
Input  
1
Manufactured  
in an ISO9001  
approved facility  
(Unbalanced)  
(Unbalanced)  
art 1. on is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.  
840E  
Bridged dual mono connections  
The 840W features Mono and Bridged Mono settings that allow two (or  
more) 840Ws to be used as mono-blocs for high end systems. Below is  
an example using two 840W’s in Bridged Mono with an 840E.  
Important 840W settings  
Only use the Left Inputs on the 840W for Bridged operation.  
In this configuration the Stereo/Mono switch on the 840W must be set  
to ‘Mono’ and the Mono mode switch must be set to ‘Bridged’.  
In Bridged Mono mode each 840W drives one speaker across its output  
channels acting as a 500W mono amplifier instead of a 200wpc stereo  
one. One 840W drives the left speaker and the other the right.  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terminals  
-
Left  
Loudspeaker Terminals  
-
Right  
Loudspeaker Terieft  
IMPORTANT!  
IMPORTANT!  
Impedance  
4
-
8
ohms  
Impedance  
4
-
8
ohms  
Impedance  
4
-
8
ohms  
Impedance  
4
-
8
ohm
Only change modes  
Only change modes  
Designed in London, England  
Designed in London, England  
when unit is off.  
when unit is off.  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tightened  
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées  
Please ensure that loudspeaker terminals are fully tighten
Veuillez s'assurer que les bornes de l'enceinte sont entièrement serré
840W  
840W  
TM  
TM  
Refer to Manual for  
more information.  
Refer to Manual for  
more information.  
azur 840W Class XD Power Amplifier  
azur 840W Class XD Power Amplifier  
In  
In  
Stereo  
Stereo  
Control Bus  
Out  
Control Bus  
Out  
Bridged  
only!  
Mono  
Bridged  
only!  
Bridged  
only!  
Mono  
Bridged  
only!  
On  
Off  
On  
Off  
Class  
2
Wiring  
Class  
2
Wiring  
Class  
2
Wiring  
Class  
2
Wiring  
In  
In  
Mono Mode  
Bi-Amp  
Mono Mode  
Bi-Amp  
Trigger  
Out/Thru  
Trigger  
Out/Thru  
Power AC  
Power AC  
B
ridi
g
g
e
d
B
ridi
g
g
e
d
Use Left Input for  
Use Left Input for  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Balanced Audio  
Input  
-
Right  
Unbalanced  
IR Emitter  
In  
Unbalanced  
Balanced Audio  
Input Loop Output  
-
Left  
Bridged Bi-Amp  
/
Bridged Bi-Amp  
/
Audio  
-
Right  
operation.  
Audio  
-
Left  
Audio  
-
Right  
operation.  
Audio Left  
-
Loop Output  
Loop Output  
Input  
Input  
Input  
Input  
Right  
Input Type  
Left  
Input Type  
Right  
Input Type  
Left  
Input Type  
In  
Loop  
In  
Loop  
In  
Loop  
In  
Loop  
Balanced  
Balanced  
Balanced  
Balanced  
Power Rating: 220  
-
230V AC  
~
50/60Hz  
Power Rating: 220  
-
230V AC  
~
50/60Hz  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
1
2
3
=
=
=
Ground  
Max Power Consumption: 2400W  
Max Power Consumption: 2400W  
N1863  
N1863  
Unbalanced  
Unbalanced  
Unbalanced  
Unbalanced  
Loop Output  
Loop Output  
Loop Output  
Loop Output  
CAUTION  
AVIS  
ACHTUNG  
CAUTION  
AVIS  
ACHTUNG  
Manufacroved facility  
ManufIoved facility  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
This device complies with part 15 of t. is subject to the following two conditions:  
1) This devul interference  
Thidevice complies with part 15 os subject to the following two conditions:  
1) This dul interference  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
46  
46  
2) This device must accept any interfence that may cause undesired operation  
2) Thdevice must accept any inte, nce that may cause undesired operation  
Stereo  
Mono  
Stereo  
Mono  
Multi-Room  
Input  
2
Balanced Audio  
Input  
1
Balanced Audio  
Keypad  
1
IR1  
IR2  
IR3  
IR4  
GND  
International Patent Pending  
LeisureTech Electronics Pty Ltd  
Power  
Trigger  
IR Emitter  
In  
Control Bus  
Designed in London, England  
In  
Out/Thru  
In  
Out  
PSU  
In  
azur 840E Pre-Amplifier  
Power Rating: 220 230V AC 50/60Hz  
On  
Off  
-
~
Mono Mode  
Bi-Amp  
Mono Mode  
Bi-Amp  
Max Power Consumption: 36W  
CAUTION  
AVIS  
ACHTUNG  
Keypad  
2
Right  
p u I n t  
Left  
Right  
Left  
p u I n t  
Balanced  
Risk of electric  
shock.  
Risque de choc  
electrique.  
Vorm öffnen  
des gerätes.  
Do not open.  
Ne pas ouvrir.  
Netzstecker ziehen.  
P r e O u t  
c e  
O
R
u t  
2
c e  
O
R
u t  
1
n
I c R e  
p u I n t  
7
p u I n t  
6
5
p u I n t  
4
p u I n t  
3
p u I n t  
2
1
Balanced Pre Out  
Flat  
/
200Hz L.P.  
B
Brrididggeedd  
B
Brrididggeedd  
L
L
Unbalanced  
Input  
L
L
1
Balanced  
Use Left Input for  
Use Left Input for  
Bridged Bi-Amp  
/
Bridged Bi-Amp  
/
R
R
R
R
operation.  
operation.  
Power AC  
Unbalanced  
GND  
Input  
2
Pre Out  
Sub Out  
Rec Out  
2
Rec Out  
1
Rec In  
Input  
7
Input  
6
Input  
5
Input  
4
Input  
3
Input  
2
Input  
1
Manufactured  
in an ISO9001  
approved facility  
(Unbalanced)  
(Unbalanced)  
art 1. on is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.  
840E  
9
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Custom installation (C.I.) use  
Technical specifications  
IR Emitter  
In  
Control Bus  
In Out  
The 840W features a Control Bus input/output  
that allow un-modulated remote control  
commands (positive logic, TTL level) to be received  
electrically by the unit and looped to another unit  
if desired. These control commands are typically  
Power Output - Stereo/Mono 200W per channel 8 Ohms  
350W per channel 4 Ohms  
Power Output - Bridged Mono 500W 8 Ohms  
800W 4 Ohms  
generated by custom installation (multi-room) systems or remote IR  
receiver systems. The Control Bus sockets are colour-coded orange.  
THD (unweighted)  
< 0.001% 1kHz  
< 0.005% 20Hz - 20kHz  
An IR Emitter Input is also provided that allows modulated IR remote  
control commands to be received electrically by the unit. Commands on  
this input operate the unit only and are not looped out demodulated on  
the Control Bus Output.  
Frequency Response  
5Hz - 80kHz -1dB  
S/N ratio (ref 1W/8 Ohm)  
> 90 dB (unweighted)  
The unit responds to ‘direct’ IR/Control codes as well as toggle codes for  
some features to simplify programming custom installation systems.  
Special direct On/Off and Mute commands can be accessed from the  
840E pre-amplifier remote control for teaching into C.I. systems as  
follows:  
Sensitivity  
(for 200W 8 Ohms)  
Stereo or Mono =  
1.5V rms unbalanced  
1.5 + 1.5V rms balanced  
Bridged Mono =  
0.775V rms unbalanced  
0.775V + 0.775V rms balanced  
1. Press and hold the Standby/On button. The remote first generates a  
standby (toggle) command. Keep the button held down, after 12  
seconds an amplifier “On” command will be generated. If the button  
is kept held down for a further 12 seconds, an amplifier player “Off”  
command is generated.  
Input impedances  
Balanced input 38 kOhm  
Unbalanced input 68 kOhm  
Damping factor  
Trigger In  
> 125 at 1 kHz  
5 - 12V AC or DC  
12V DC @ 100mA  
2. Press and hold the Mute button. The remote first generates a mute  
(toggle) command. Keep the button held down, after 12 seconds a  
“Mute on” command will be generated. If the button is kept held  
down for a further 12 seconds, a “Mute off” command is generated.  
Trigger Out  
These commands are recognised by the 840W via the IR Emitter input.  
Power consumption  
Maximum 2400W  
Active (no signal) < 180W  
Standby < 5W  
A code table for this product is available on the Cambridge Audio  
website:  
Dimensions (H x W x D)  
Weight  
148 x 430 x 365mm  
(5.8 x 16.9 x 14.4”)  
19.1kg (42.1lbs)  
10  
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azur 840W  
Troubleshooting  
There is no power  
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 is no sound  
Make sure the unit is not in Standby mode.  
Check that your source component is properly connected.  
Check that your loudspeakers are properly connected.  
Check that the Left and Right Input Type switches are in the correct  
position (Balanced or Unbalanced).  
Check that the Stereo/Mono mode switch is in the correct position  
(Stereo or Mono).  
Check that the Mono mode switch is in the correct position (Bi-Amp or  
Bridged).  
There is no sound on one channel  
Check that your source component is properly connected.  
Check that your loudspeakers are properly connected.  
Check that the Left and Right Input Type switches are in the correct  
position (Balanced or Unbalanced).  
Check that the Stereo/Mono mode switch is in the correct position  
(Stereo or Mono).  
Check that the Mono mode switch is in the correct position (Bi-Amp or  
Bridged).  
There is a loud buzz or hum  
Ensure that no interconnects are loose or defective.  
Ensure that your tape deck/turntable is not too close to the unit.  
There is weak bass or diffused stereo imaging  
Ensure that the loudspeakers are not wired out of phase.  
For more frequently asked questions (FAQs), technical advice and  
information on getting the most out of your 840W, please visit the  
Support section on Cambridge Audio’s website:  
11  
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Cambridge Audio is a brand of Audio Partnership Plc  
Registered Office: Gallery Court, Hankey Place,  
London, SE1 4BB, United Kingdom  
Registered in England No. 2953313  
© 2008 Cambridge Audio Ltd  
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