Cambridge Audio Azur 740C: instruction

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Upsampling compact disc player

User’s manual

2

Upsampling CD-Player

Bedienungsanleitung

12

Lecteur de CD upsampling

Manuel d'utilisation

22

Reproductor de compact disc de muestreo superior

Manual del usuario

32

Lettore di compact disc a sovracampionatura

Manuale per l'utente

42

Upsampling compact disc speler

Gebruikershandleiding

52

Opsampling cd-afspiller 

Brugervejledning

62

Проигрыватель компакт-дисков с

использованием повышенной дискретизации

Руководство пользователя

72

740C

azur

Thank   you   for   purchasing   this   Azur   740C   Upsampling   Compact   Disc

Player.   We   hope   that   you   will   appreciate   the   results   and   enjoy   many

years  of  listening  pleasure  from  it.  

Key to the abilities of the 740C is ATF

TM

(Adaptive Time Filtering) an

upsampling process developed in conjunction with Anagram

Technologies of Switzerland. 

This system intelligently interpolates 16 bit/44.1kHz CD (or other) audio

data to 24bit/384kHz through the use of a 32 bit Analog Devices Black

Fin DSP (Digital Signal Processor) for the very best sound quality. The

ATF system applies sophisticated polynomial curve fitting interpolation

and incorporates a time domain model which allows data buffering and

re-clocking almost completely eradicating digital jitter.

As with the 540C/640C V2 CD players our proprietary Dual Differential

Virtual Earth Balanced filter topology is used. However in the 740C this

has been further enhanced. As the upsampled audio data rate is so

high, aliasing artefacts are moved way above audible frequencies, this

in turn allows us to use a new low order 2 pole linear-phase Bessel

version of the topology for constant group delay and minimal phase shift

in the audio band.

Two very high quality Wolfson WM8740 24 bit DACs (Digital to Analog

Converters) are used in dual differential mode. As each channel has its

own DAC to process information, completely separate and symmetrical

analog filter circuitry can be implemented.  These allow both left and

right channel circuitry to operate identically, ensuring the 740C delivers

fantastic sound-staging and stereo imaging properties. 

Two digital inputs are fitted allowing other digital sources to be brought

into the 740C and upsampled, the 740C then working as a very high

quality DAC.

A digital output is also fitted which can even output upsampled data at

various rates and word widths, independent from the main audio output,

which is always set at 24/384 for best sound quality.

In addition to these audiophile features Control Bus Input/Output and IR

Emitter Inputs are provided to make it easy to integrate this unit into

Custom Installation systems if desired.

All this proprietary engineering is housed within our low resonance,

acoustically damped chassis. An Azur Navigator remote control is also

provided, giving full remote control of your CD player and Azur amplifiers

in an attractive and easy to use handset.

Your CD player can only be as good as the system it is connected to.

Please do not compromise on your amplifier, speakers or cabling.

Naturally we particularly recommend amplification from the Cambridge

Audio Azur range,  and in particular the new 740A Integrated Amplifier

which has been designed to the same exacting standards as this CD

player. 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

Remote control of matching products.......................................................7

iPod compatibility........................................................................................7

Operating instructions ................................................................................8

External digital sources ..............................................................................9

CD player setup.........................................................................................10

Custom installation use............................................................................11

Troubleshooting ........................................................................................11

Technical Specifications ..........................................................................11

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:

support@cambridgeaudio.com

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.

© Copyright Cambridge Audio Ltd 2007

Adaptive Time Filtering (ATF) technology is copyright Anagram Technologies SA. All

Rights Reserved.

iPod is a registered trademark of Apple Computer, Inc. All rights reserved.

740C azur

3

ENGLISH

Cambridge Audio warrants this product to be free from defects in

materials and workmanship (subject to the terms set forth below).

Cambridge Audio will repair or replace (at Cambridge Audio's option) this

product or any defective parts in this product. Warranty periods may vary

from country to country. If in doubt consult your dealer and ensure that

you retain proof of purchase.

To obtain warranty service, please contact the Cambridge Audio authorised

dealer from which you purchased this product. If your dealer is not

equipped to perform the repair of your Cambridge Audio product, it can be

returned by your dealer to Cambridge Audio or an authorised Cambridge

Audio service agent. You will need to ship this product in either its original

packaging or packaging affording an equal degree of protection.

Proof of purchase in the form of a bill of sale or receipted invoice, which

is evidence that this product is within the warranty period, must be

presented to obtain warranty service.

This Warranty is invalid if (a) the factory-applied serial number has been

altered or removed from this product or (b) this product was not

purchased from a Cambridge Audio authorised dealer. You may call

Cambridge Audio or your local country Cambridge Audio distributor to

confirm that you have an unaltered serial number and/or you purchased

from a Cambridge Audio authorised dealer.

This Warranty does not cover cosmetic damage or damage due to acts of

God, accident, misuse, abuse, negligence, commercial use, or modification

of, or to any part of, the product. This Warranty does not cover damage due

to improper operation, maintenance or installation, or attempted repair by

anyone other than Cambridge Audio or a Cambridge Audio dealer, or

authorised service agent which is authorised to do Cambridge Audio

warranty work. Any unauthorised repairs will void this Warranty. This

Warranty does not cover products sold AS IS or WITH ALL FAULTS.

REPAIRS OR REPLACEMENTS AS PROVIDED UNDER THIS WARRANTY ARE

THE EXCLUSIVE REMEDY OF THE CONSUMER. CAMBRIDGE AUDIO SHALL

NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR

BREACH OF ANY EXPRESS OR IMPLIED WARRANTY IN THIS PRODUCT.

EXCEPT TO THE EXTENT PROHIBITED BY LAW, THIS WARRANTY IS EXCLUSIVE

AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES

WHATSOEVER INCLUDING, BUT NOT LIMITED TO, THE WARRANTY OF

MERCHANTABILITY AND FITNESS FOR A PRACTICAL PURPOSE.

Some countries and US states do not allow the exclusion or limitation of

incidental or consequential damages or implied warranties so the above

exclusions may not apply to you. This Warranty gives you specific legal

rights, and you may have other statutory rights, which vary from state to

state or country to country.

Plug Fitting Instructions (UK Only)

The cord supplied with this appliance is factory fitted with a UK mains plug fitted

with a 3 amp fuse inside. If it is necessary to change the fuse, it is important that

a 3 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:

The wire which is coloured BLUE must be

connected to the terminal which is marked

with the letter ‘N’ or coloured BLACK.

The wire which is coloured BROWN must be

connected to the terminal which is marked

with the letter ‘L’ or coloured RED.

The wire which is coloured GREEN/YELLOW

must be connected to the terminal which is

marked with the letter ‘E’ or coloured GREEN.

If your model does not have an earth wire,

then disregard this instruction.

If a standard 13 amp (BS 1363) plug is used, a 3 amp fuse must be fitted, or if any

other type of plug is used a 3 amp or 5 amp fuse must be fitted, either in the plug

or adaptor, or on the distribution board. 

Checking the Power Supply Rating

For your own safety please read the following instructions carefully before

attempting to connect this unit to the mains.

Check that the rear of your unit indicates the correct supply voltage. If your mains

supply voltage is different, consult your dealer.

This unit is designed to operate only on the supply voltage and type that is

indicated on the rear panel of the unit. Connecting to other power sources may

damage the unit.

This equipment must be switched off when not in use and must not be used unless

correctly earthed. To reduce the risk of electric shock, do not remove the unit's cover

(or back). There are no user serviceable parts inside. Refer servicing to qualified

service personnel. If the power cord is fitted with a moulded mains plug the unit must

not be used if the plastic fuse carrier is not in place. Should you lose the fuse carrier

the correct part must be reordered from your Cambridge Audio dealer.

The lightning flash with the arrowhead symbol within an equilateral triangle

is intended to alert the user to the presence of un-insulated ‘dangerous

voltage’ within the product’s enclosure that may be of sufficient

magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert

the user to the presence of important operating and maintenance

instructions in the service literature relevant to this appliance.

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.

Approvals

This product complies with European Low Voltage (73/23/EEC)

and Electromagnetic Compatibility (89/336/EEC) Directives

when used and installed according to this instruction manual.

For continued compliance only Cambridge Audio accessories

should be used with this product and servicing must be referred

to qualified service personnel.

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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.

Safety precautions Limited warranty

4

Important safety instructions

Please take a moment to read these notes before installing your 740C,

as they will enable you to get the best performance and prolong the life

of the unit. We advise you follow all instructions, heed all warnings and

keep the instructions for future reference.

Ventilation

IMPORTANT - The unit will become hot when in use. 

Please ensure there is ample ventilation (at least 10cm clearance all

round). 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 install near any heat sources such as radiators, heat

registers, stoves, or other apparatus (including amplifiers) that produce

heat. 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.

Positioning

Choose the installation location carefully. Avoid placing it in direct

sunlight or close to a source of heat. Also avoid locations subject to

vibration and excessive dust, cold or moisture. 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

a DVD player or other equipment on top of the unit.

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. When a cart is used, use caution when moving

the cart to avoid injury from tip-over.

WARNING - To reduce the risk of fire or electric shock, do not expose this

unit to rain or moisture. 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. In the event,

switch off immediately, disconnect from the mains supply and contact

your dealer for advice.

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.

Grounding and polarisation

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 third prong are provided for your safety. If the provided

plug does not fit your outlet, consult an electrician for replacement of

the obsolete outlet.

Power sources 

The unit is of Class 1 construction and must be connected to a Mains

socket outlet with a protective earthing connection.

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. 

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.

Power cord protection

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. Protect the

power cord from being walked on or pinched particularly at plugs,

convenience receptacles, and the point where they exit from the unit.

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.

Overloading 

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. 

Lightning 

For added protection during a thunderstorm, or when it is left

unattended and unused for long period of time, unplug the unit from the

wall outlet and disconnect the antenna or cable system. This will prevent

damage to the unit from lightning and power-line surges.

Cleaning

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 amplifier.

Attachments

Do not use attachments not recommended by your dealer as they may

cause harm to the unit. Only use the specified attachments/accessories

with this unit.

Servicing 

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.

Contact the service department should any of these conditions occur:

- When the power-supply cord or plug is damaged.

- If liquid has been spilled, or objects have fallen into the unit.

- If the unit has been exposed to rain or water.

- If the unit does not operate normally after following the operation

instructions, adjust only those controls that are covered by the

operation instructions. 

- If the unit has been dropped or damaged in any way.

- When the unit exhibits a distinct negative change in performance.

Important Note

This unit has been designed to play compact discs,

recordable CDs (CD-R) and re-writable CDs (CD-RW)

bearing the identification logo shown here. No other

discs can be used. The CD-R/CD-RW discs should

contain properly recorded TOC (Table of Contents) information so that

they can be played back. This unit can play only the discs recorded in the

CD-DA format designed for music reproduction. Do not attempt to play a

disc on this unit containing other data, such as a CD-ROM for PCs.

740C azur

5

ENGLISH

Off

Power

On

Manufactured in an 

ISO9002 approved facility

This device complies with

part 15 of FCC rules

Caution

Risk of electric shock.

Do not open.

Avis

Risque de choc electrique.

Ne pas ouvrir.

Achtung

Vorm öffnen des gerätes.

Netzstecker ziehen.

Digital Outputs

Power AC

IR Emitter

In

In

Out

Control Bus

S/P DIF

Co-axial

Toslink

Optical

Digital Inputs 1

S/P DIF

Co-axial

Toslink

Optical

Digital Inputs 2

S/P DIF

Co-axial

Toslink

Optical

Class 1 Laser Product

Luokan 1 Laserplaite

Klass 1 Laserapparat

Designed in London, England

Incorporating 

Q5

™

 from:

ANAGRAM

TECHNOLOGIES

Line Output

Line Output

Right

Right

Left

Left

azur 740C Upsampling

Compact Disc Player

www.cambridge-audio.com

Power Rating:

  230V AC ~ 50Hz

Max Power Consumption:

  25W

AЯ

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1

2

3

4

6

5

8

7

Rear panel connections

Power On/Off

Switches the unit on and off.

AC power socket

Once you have completed all connections to the amplifier, plug the AC

power cable into an appropriate mains socket then switch on. Your

compact disc player is now ready for use.

IR (Infra Red) Emitter In

Allows modulated IR commands from multi-room systems or IR repeater

systems to be received by the amplifier. Commands received here are

not looped out of the Control Bus. Refer to the ‘Custom Installation’

section for more information.

Control Bus

In  - Allows un-modulated commands from multi-rooms systems or other

components to be received by the unit.

Out  - Loop out for control bus commands to another unit.

Digital outputs

The digital outputs allow a separate DAC or digital recording device to be

connected. The sophisticated DSP software in the 740C even allows

these outputs to be set to output raw (pass through) or upsampled data

independently from the main audio outputs. Refer to the ‘CD player

setup’ section for more information. 

S/P  DIF  CO-aaxial  Digital  - To obtain best results, use a high quality 75

ohm digital RCA interconnect cable (not one designed for normal audio

use).

Toslink   Optical   Digital   - Use a high quality TOSLINK fibre optic

interconnect cable designed specifically for audio use. 

Only one of the two output types should be used at a time.

1

&      Digital Inputs 1 / 2

The digital inputs allow the digital outputs of other source components

to be connected to the 740C. The 740C can then act as a very high

quality upsampling DAC, improving the sound quality of the connected

sources. Two digital inputs allow two external sources to be connected:

S/P   DIF   CO-aaxial   Digital   - Use a high quality 75 ohm digital RCA

interconnect cable (not one designed for normal audio use).

Toslink   Optical   Digital   - Use a high quality TOSLINK fibre optic

interconnect cable designed specifically for audio use. 

Only one of the two input types for each input should be used at a time.

Line Output

Use good quality RCA/Phono interconnect cables from these sockets to

any line level input on your amplifier.

2

3

5

4

6

7

8

6

Standby / On

Stop

Play

Pause

Open

Close

Select

Menu

Skip

Scan

azur

 740C

Upsampling Compact Disc Player

1

2

3

4

5

9

7

6

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8

Front panel controls

Standby/On

Switches the unit between Standby mode (indicated by dim power LED)

and On (indicated by bright power LED). Standby is a low power mode

where the power consumption is less than 10 Watts. The unit should be

left in Standby mode when not in use.

Menu

Press to scroll through the 740C menu screens. Please refer to the ‘CD

player setup’ section of this manual for more information.

Select

Press to select between CD Playback or Digital Inputs 1 and 2. Also used

to toggle through the options on selected menu screens. Please refer to

the ‘CD player setup’ section of this manual for more information.

Infrared sensor

Receives IR commands from the supplied Azur remote control. A clear

unobstructed line of sight between the remote control and the sensor is

required.

Disc tray

Compact Disc tray. Use the 

Open/Close

button to activate.

Display

LCD used to display upsampling rate, CD track number,

elapsed/remaining time and other CD functions. Please refer to the ‘CD

player setup’ section of this manual for more information.

1

2

3

4

5

6

Open/Close

Allows you to open and close the disc tray thus making it possible to load

a disc. Pressing 

Play

will also close the tray and start the CD.

Play/Pause

Plays the disc and pauses play.

Stop

Stops the CD playing.

Skip/Scan

Allows for skipping between tracks and also searching within tracks.

Press once to skip a track, press and hold to search within a track.

7

8

9

10