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
2
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.
