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Thank you for purchasing this Azur 740A Integrated Amplifier. We hope
that you will enjoy many years of listening pleasure from it.
The 740A is based on our award-winning amplifier topology as seen in
our 540A and 640A models, further developed and enhanced for this
new higher end model as part of our on-going development programme.
The 740A features three separate transformer secondaries for the left
and right power amp channels and preamp, with separate rectifiers and
PSU's allowing dual mono operation of the left and right power
amplifiers. Two pairs of very high current output transistors per channel
allow the 740A to drive almost any speaker with ease and ensure
excellent bass response and dynamic control.
Other features include the use of a very high precision silicon gate
volume / balance control rather than the more common potentiometer.
Volume is controllable in 1 dB steps over most of the range, giving very
fine control, an accurate logarithmic law and superbly accurate channel
balance. Software control of all functions allows gain trim to be applied
to any input and other functions.
The 740A also includes support for multi-room use. By plugging in one
or two external Cambridge Audio Incognito keypads (or active speakers)
and a power supply unit your amplifier can become the hub of a simple
multi-room system. In addition, Control Bus Input/Output and IR Emitter
Input are provided to make it easy to integrate this unit into Custom
Installation systems if desired.
An Azur Navigator remote control is also provided, giving full remote
control of your amplifier in an attractive and easy to use handset.
Your amplifier can only be as good as the system it is connected to.
Please do not compromise on your source equipment, speakers or
cabling. Naturally we particularly recommend models from the
Cambridge Audio Azur range. 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.
Thanks for taking the time to read this manual; we do recommend you
keep it for future reference.
Matthew Bramble
Technical Director
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Contents Introduction
Introduction .................................................................................................2
Limited warranty..........................................................................................3
Safety precautions ......................................................................................3
Important safety instructions .....................................................................4
Rear panel connections..............................................................................5
Front panel controls ...................................................................................6
Remote control ............................................................................................7
iPod compatibility ........................................................................................7
Connections ................................................................................................8
Operating instructions ................................................................................9
Amplifier setup.......................................................................................9-10
Multi-Room connections...........................................................................11
Custom installation use............................................................................11
CAP5 protection system ...........................................................................12
Troubleshooting.........................................................................................13
Technical Specifications ...........................................................................13
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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.
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.
Incognito and Incognito Ready are trademarks of Cambridge
Audio Ltd. All rights reserved.
© Copyright Cambridge Audio Ltd 2008
A-BUS and A-BUS Ready are registered trademarks of
LeisureTech Electronics Pty Ltd Australia.
iPod and Apple are trademarks of Apple Inc., registered in the
U.S. and other countries.
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740A azur
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ENGLISH
For your own safety please read the following important safety
instructions carefully before attempting to connect this unit to the
mains power supply. They will also enable you to get the best
performance from and prolong the life of the unit:
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with
the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers) that
produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type
plug. A polarized plug has two blades with one wider than the other.
A grounding-type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles and the point where
they exit from the apparatus.
11. Only use attachments/accessories specified by the
manufacturer.
12. Use with only the cart, stand, tripod, bracket, or table
specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/ apparatus
combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for
long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way, such
as the power-supply cord or plug having been damaged, liquid has
been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
WARNING -“ To reduce the risk of fire or electric shock, do not expose
this unit to rain or moisture.
The unit is of Class 1 construction and must be connected to a mains
socket outlet with a protective earthing connection.
The unit must be installed in a manner that makes disconnection of the
mains plug from the mains socket outlet (or appliance connector from
the rear of the unit) possible. Where the mains plug is used as the
disconnect device, the disconnect device shall remain readily operable.
Only use the mains cord supplied with this unit.
Please ensure there is ample ventilation. We recommend that you do
not place the unit in an enclosed space; if you wish to place the unit
on a shelf, use the top shelf to allow maximum ventilation. Do not put
any objects on top of this unit. Do not situate it on a rug or other soft
surface and do not obstruct any air inlets or outlet grilles. Do not cover
the ventilation grilles with items such as newspapers, tablecloths,
curtains, etc.
This unit must not be used near water or exposed to dripping or
splashing water or other liquids. No objects filled with liquid, such as
vases, shall be placed on the unit.
The lightning flash with the arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of un-insulated
dangerous voltage within the products 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.
WEEE symbol
The crossed-out wheeled bin is the European Union symbol
for indicating separate collection for electrical and electronic
equipment. This product contains electrical and electronic
equipment which should be reused, recycled or recovered
and should not be disposed of with unsorted regular waste. Please
return the unit or contact the authorised dealer from whom you
purchased this product for more information.
CE mark
This product complies with European Low Voltage
(2006/95/EC) 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.
C-Tick mark
This product meets the Australian Communications
Authoritys Radio communications and EMC requirements.
Ross Test Stamp
This product meets Russian electronic safety approvals.
FCC regulations
NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR
TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO
THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER
AUTHORITY TO OPERATE THE EQUIPMENT.
This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation.
If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
- Re-orient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Important safety instructions
