Cambridge Audio Stereo Amplifier Azur 840W User Manual

azur 840W

Class XD power amplifier

User’s manual

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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 ‘L’ or 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.

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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

website: www.cambridge-audio.com

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

Visit www.cambridge-audio.com and register to receive notification of future

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:

[email protected]

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.

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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

Veuillez s'assurer que les bornes de l'enceinte sont entièrement serrées

Refer to Manual for

more information.

azur 840W Class XD Power Amplifier

www.cambridge-audio.com

Stereo

Control Bus

Out

Mono

Bridged

only!

Bridged

only!

Off

Power AC

Class 2 Wiring

Mono Mode

Bi-Amp

Trigger

Out/Thru

Brrididggeedd

Use Left Input for

Balanced Audio - Right

Unbalanced

Audio - Right

Input

IR Emitter

Unbalanced

Audio - Left

Input

Balanced Audio - Left

Bridged Bi-Amp

operation.

Input

Loop Output

Input

Loop Output

Right

Input Type

Balanced

Left

Loop

Input Type

Balanced

Power Rating: 220 - 230V AC ~ 50/60Hz

Max Power Consumption: 2400W

Ground

N1863

Unbalanced

Loop Output

CAUTION

AVIS

ACHTUNG

Manufactured in an ISO9001 approved facility

omplies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

Risk of electric

shock.

Risque de choc

electrique.

Vorm öffnen

des gerätes.

This device

Do not open.

Ne pas ouvrir.

Netzstecker ziehen.

AЯ46

1) This device may not cause harmful interference

2) This device must accept any interference, including interference that may cause undesired operation

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.

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

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.

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.

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.

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.

Unbalanced Audio

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.

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.

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Front panel controls

azur 840W

Class XD Power Amplifier

Left

Protection

Right

Protection

Standby /On

Output

Clipping

Bridged

Mono

Output

Clipping

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

Mono

Note: The protection LEDs will flash whilst this check is being done.

Mono output:

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

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:

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

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.

Bridged

This LED indicates that the 840W is being used in Bridged mode. (The

Mono LED will also be illuminated.)

Mono

This LED indicates that the 840W is being used in a Mono mode.

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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

Balanced Audio

Input

Balanced Audio

Keypad

IR1

IR3

GND

International Patent Pending

LeisureTech Electronics Pty Ltd

Power

Trigger

Out/Thru

IR Emitter

Control Bus

In Out

Designed in London, England

PSU

azur 840E Pre-Amplifier

Off

Power Rating: 220

230V AC

50/60Hz

Max Power Consumption: 36W

www.cambridge-audio.com

CAUTION

AVIS

ACHTUNG

Keypad

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

R u t

c e

R u t

I c R e

p u I n t

Balanced Pre Out

Flat / 200Hz L.P.

Unbalanced

Input

Balanced

Power AC

Unbalanced

GND

Input

Pre Out

Right

Left

Sub Out

Rec Out

Rec In

Input

Manufactured

in an ISO9001

approved facility

(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

ohms

Impedance 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

Refer to Manual for

more information.

azur 840W Class XD Power Amplifier

www.cambridge-audio.com

Stereo

Control Bus

Out

Bridged

only!

Mono

Bridged

only!

Off

Class

Wiring

Class

Wiring

Mono Mode

Bi-Amp

Trigger

Out/Thru

Power AC

Brridid

Use Left Input for

Balanced Audio

Input

Right

Unbalanced

IR Emitter

Unbalanced

Balanced Audio

Input Loop Output

Left

Bridged Bi-Amp

Audio

Right

operation.

Audio Left

Loop Output

Input

Right

Input Type

Left

Input Type

Loop

Balanced

Power Rating: 220

230V AC

50/60Hz

Ground

Max Power Consumption: 2400W

N1863

Unbalanced

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.

AЯ46

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

Balanced Audio

Input

Balanced Audio

Keypad

IR1

IR3

GND

International Patent Pending

Power

Trigger

Out/Thru

IR Emitter

Control Bus

LeisureTech Electronics Pty Ltd

Designed in London, England

Out

PSU

azur 840E Pre-Amplifier

Off

Power Rating: 220

230V AC

50/60Hz

Max Power Consumption: 36W

www.cambridge-audio.com

CAUTION

AVIS

ACHTUNG

Keypad

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

R u t

c e

R u t

I c R e

p u I n t

Balanced Pre Out

Flat

200Hz L.P.

Unbalanced

Input

Balanced

Power AC

Unbalanced

GND

Input

Pre Out

Right

Left

Sub Out

Rec Out

Rec In

Input

Manufactured

in an ISO9001

approved facility

(Unbalanced)

Loudspeaker Terminals

Right

Loudspeaker Terminals

Left

IMPORTANT!

Impedance

ohms

Impedance 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

Refer to Manual for

more information.

azur 840W Class XD Power Amplifier

www.cambridge-audio.com

Stereo

Control Bus

Out

Bridged

only!

Mono

Bridged

only!

Off

Class

Wiring

Class

Wiring

Mono Mode

Bi-Amp

Trigger

Out/Thru

Power AC

Brridid

Use Left Input for

Balanced Audio

Input

Right

Unbalanced

IR Emitter

Unbalanced

Balanced Audio

Input Loop Output

Left

Bridged Bi-Amp

Audio

Right

operation.

Audio Left

Loop Output

Input

Right

Input Type

Left

Input Type

Loop

Balanced

Power Rating: 220

230V AC

50/60Hz

Ground

Max Power Consumption: 2400W

N1863

Unbalanced

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.

AЯ46

2) This device must accept any interference, including interference that may cause undesired operation

840W

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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

ohms

Impedance

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

Refer to Manual for

more information.

azur 840W Class XD Power Amplifier

www.cambridge-audio.com

Stereo

Control Bus

Out

Bridged

only!

Mono

Bridged

only!

Off

Class

Wiring

Class

Wiring

Mono Mode

Bi-Amp

Trigger

Out/Thru

Power AC

Brridid

Use Left Input for

Balanced Audio

Input

Right

Unbalanced

IR Emitter

Unbalanced

Balanced Audio

Input Loop Output

Left

Bridged Bi-Amp

Audio

Right

operation.

Audio Left

Loop Output

Input

Right

Input Type

Left

Input Type

Loop

Balanced

Power Rating: 230V AC

50Hz

Ground

Max Power Consumption: 1600W

N1863

Unbalanced

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.

AЯ46

2) This device must accept any interference, including interference that may cause undesired operation

Multi-Room

Input

Balanced Audio

Input

Balanced Audio

840E

Keypad

IR1

IR2

IR3

IR4

GND

International Patent Pending

Power

Trigger

IR Emitter

Control Bus

LeisureTech Electronics Pty Ltd

Designed in London, England

Out/Thru

Out

PSU

azur 840E Pre-Amplifier

Off

Power Rating: 230V AC

50Hz

Max Power Consumption: 36W

www.cambridge-audio.com

CAUTION

AVIS

ACHTUNG

Keypad

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

R u t

c e

R u t

I c R e

p u I n t

Balanced Pre Out

Flat

200Hz L.P.

Unbalanced

Input

Balanced

Power AC

Unbalanced

GND

Input

Pre Out

Right

Left

Sub Out

Rec Out

Rec In

Input

Manufactured

in an ISO9001

approved facility

(Unbalanced)

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

Balanced Audio

Input

Balanced Audio

Keypad

IR1

IR3

GND

International Patent Pending

LeisureTech Electronics Pty Ltd

Power

Trigger

Out/Thru

IR Emitter

Control Bus

In Out

Designed in London, England

PSU

azur 840E Pre-Amplifier

Off

Power Rating: 220

230V AC

50/60Hz

Max Power Consumption: 36W

www.cambridge-audio.com

CAUTION

AVIS

ACHTUNG

Keypad

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

R u t

c e

R u t

I c R e

p u I n t

Balanced Pre Out

Flat / 200Hz L.P.

Unbalanced

Input

Balanced

Power AC

Unbalanced

GND

Input

Pre Out

Right

Left

Sub Out

Rec Out

Rec In

Input

Manufactured

in an ISO9001

approved facility

(Unbalanced)

Loudspeaker Terminals

Right

Loudspeaker Terminals

Left

IMPORTANT!

Impedance

ohms

Impedance 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

Refer to Manual for

more information.

azur 840W Class XD Power Amplifier

www.cambridge-audio.com

Stereo

Control Bus

Out

Bridged

only!

Mono

Bridged

only!

Off

Class

Wiring

Class

Wiring

Mono Mode

Bi-Amp

Trigger

Out/Thru

Power AC

Brridid

Use Left Input for

Balanced Audio

Input

Right

Unbalanced

IR Emitter

Unbalanced

Balanced Audio

Input Loop Output

Left

Bridged Bi-Amp

Audio

Right

operation.

Audio Left

Loop Output

Input

Right

Input Type

Left

Input Type

Loop

Balanced

Power Rating: 220

230V AC

50/60Hz

Ground

Max Power Consumption: 2400W

N1863

Unbalanced

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.

AЯ46

2) This device must accept any interference, including interference that may cause undesired operation

840W

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.