Cambridge Azur 740A
Contents
1. 2 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 amplifier is now ready for use 3 Loudspeaker terminals Two sets of loudspeaker terminals are available A main loudspeaker terminals and B secondary loudspeaker terminals Both sets of speakers can be turned on and off independently Connect the wires from your left channel loudspeaker to the LEFT amp terminals and the wires from the right channel loudspeaker to the RIGHT amp terminals In each case the red terminal is the positive output and the black terminal is the negative output Care should be taken to ensure no stray strands of wire short the speaker outputs together Please ensure that the loudspeaker terminals have been tightened completely to provide a good electrical connection It is possible for the sound quality to be affected if the screw terminals are loose Note When using one pair of speakers use speakers with a nominal impedance of between 4 8 ohms When using two pairs of speakers use speakers with a nominal impedance of between 6 8 ohms Please also note that when multiple speakers are connected across the amplifier s outputs the load as seen by the amplifier is reduced This will make the amplifier work harder and hotter 4 Dip switches Used in conjunction with custom installation C I systems Refer to the Custom installa2. Y ME d d hy Y S azur 740A passion Your music our Cambridge Audio Cambridge Audio Contents Introduction limited WEN GAIN EV sc ioana ceea soia ea soia dadea Daiana poa aaa aaa DA AHAN Ah EDAR aa A EA 3 Safety azea aA 3 Important safety in SErUGI OS o 4 REAL panel C NNEC M Ean disusin s ani sal R H bin k dat ne ala HER Ma b R N MERA LE 5 Front panel CONMUIONS agurrari 6 Remote control 7 iPod compatibility seiri cect a o Ca taiata fe Era ate E Connections AAO 8 Operating instructions aurreraino salaii si kel n keki QE R L a er ep al kak na S Aka atari 9 Amplifier SetuP 4 4 y lar s ya s E Er erre Sira ERA R 9 10 Multi Room Gone Cl Ol Ss e 11 Custom installation use GAP5 Trot6CUHOn Sy S G T s xis 4 ai sanik rana sox n R KA SERA A KRAL aaa saga ai DERAA YEREVAN 12 SI alau AAO 13 Techhical Bilal ALEA 13 EAE ENE KA A ATA e E EO h Make sure you register your purchase Visit www cambridgeaudio com sts By registering you ll be the first to know about e Future product releases e Software upgrades e News events and exclusive offers plus competitions 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 s
3. Unable to make or play tape recordings Check that TAPE MON and TAPE OUT have been connected correctly There is weak bass or diffused stereo imaging Ensure that speakers are not wired out of phase Message on display flashing See section on CAP5 protection system The remote handset will not function Check that the batteries have not expired Ensure that nothing is blocking the remote sensor Check that the Front Panel IR dip switch on rear panel is set to On No response from unit when both In and Out Control Bus sockets are connected Set Control Bus Passthru dip switch on rear panel to Off For more frequently asked questions FAQs technical advice and information on getting the most out of your 740A please visit the Support section on Cambridge Audio s website www cambridge audio com support php For all servicing in or out of warranty please contact your dealer azur 740A Technical specifications Power Output THD unweighted Frequency Response S N ratio ref 1W 8 Ohm Input impedances Power Amp damping factor Max power consumption Minimum power consumption Bass amp Treble controls Dimensions H x W x D Weight 100W RMS into 8 Ohms 150W RMS into 4 Ohms ENGLISH lt 0 001 1 kHz at 80 of rated power lt 0 01 20 Hz 20 kHz at 80 of rated power 10 Hz 50 kHz 1 dB gt 96 dB Inputs 1 6 47 kOhm Tape Input 47 kOhm gt 110 at 1 kHz 750W Active no signa
4. 4 Short circuit detection Indication Unit has not come out of Standby display flashes SPKR SHORT Volume Description During power up from Standby CAP5 performs a check on the loudspeaker terminals to see if a short across the terminals has been accidentally introduced display flashes SPKR CHECK If the resistance measured across the loudspeaker terminals is too low the unit will stay in Standby mode until the fault has been removed and Power up is re attempted display flashes SPKR SHORT Remedy User related fault There may be a short circuit between the loudspeaker terminals Check all loudspeaker connections before attempting to switch the unit out of Standby display will flash SPKR CHECK then SPKR OK when short circuit fixed It is possible to disable the short circuit detection feature by pressing the SHORT DT button to off when in the 740A System Configure menu but it is not recommended This would only be required if the loudspeakers have very low DC resistance 5 Intelligent clipping detection Indication Volume is reduced automatically CLIPPING appears on the front panel display Mode e INPIT 1 d O mn o 3 Volume Description CAP5 has the ability to detect when the amplifier starts to clip or overdrive at its output which can damage loudspeakers and degrade the sound Clipping distortion is caused at high
5. Volume Press and hold the relevant input select button for four seconds to change its name For example if Input 1 is a CD player name it CD etc Letters are selected by turning the volume control to scroll through the available characters Press LEFT or RIGHT to select which character you wish to edit Press EXT CHAR to access an extended character set Press OK to confirm and exit the input name change menu System Configure menu Mede e INP TRIN Fran el Volume Press and hold the Mode button to access the System Configure menu The first menu options are Input gain trim and Fixed input gain Press MORE to access the second menu options of Clip detector LCD brightness Speaker short detector Volume ramp and Volume display Mode Volume To exit the System Configure menu and its sub menus press the Mode button again Clip detector Speaker short detector Refer to the CAP5 section of this manual for more information on the Clip and Short detection features of the 740A as both can be enabled default or disabled LCD brightness Mode e b ne ay In the System Configure menu press the LCD input select button to scroll through bright dim off settings for the front panel display Press the Mode button to exit Volume ramp Volume The 740A automatically ramps the volume down when going into Standby mode and up when c
6. These inputs are for analog audio signals only They should not be connected to the digital output of a CD player or any other digital device 140A ENGLISH Cambridge Audio Front panel controls Cambridge Audio azur 740A Integrated Amplifier Volume e Standby On Phones Speaker A B Mode Bass Treble Direct 9999 O SE OO 0900 0000 OOO o e 2 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 2 Phones Allows for the connection of stereo headphones with a 14 Jack plug Headphones with an impedance of between 32 and 600 ohms are recommended When the headphones are connected the loudspeaker relays are released switching off the output to the loudspeakers speakers A and B 3 Speaker A B Press to scroll through the speaker sets connected to the loudspeaker terminals on the back panel Speaker sets A B or A and B This can be used for listening to an extra set of loudspeakers in another room Please note that care should be taken when choosing speakers if two loudspeakers are going to be used on each channel If the combined resistance measured on the loudspeaker terminals is too low the amplifier may not switch out of Standby mode until a suitab
7. Use to increase decrease the level of the sound from the outputs of the amplifier This control affects the level of the loudspeaker output the pre amp output and the headphone output It does not affect the Tape Out connections The Volume control is also used in navigating the 740A System Configure menus on the front panel display Please refer to the Operating instructions section of this manual for more information on some functions of these buttons Remote control The 740A is supplied with an Azur Navigator remote control that operates both this amplifier and Cambridge Audio Azur CD players Insert the supplied AAA batteries to activate The functions relevant to the amplifier are as follows Standby On Switches the amplifier between On and Standby mode Numerical buttons 1 8 Press to change the input source to the amplifier Button 6 toggles Tape Monitor on off Bright Adjust the backlight of the front panel display bright dim or off Mode Press to switch between Volume and Balance modes Mute Mutes the audio on the amplifier The mute mode is indicated by MUTE appearing and the volume level being replaced by two flashing dashes in the display Press again to cancel mute ES Volume Increase or decrease the volume of the amplifier output e e 900 D EU C The following functions can be optionally used to control Cambridge Azur range CD players Open Close Opens
8. 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 1 ln wa av Matthew Bramble Technical D
9. L or coloured RED The wire which is coloured GREEN YELLOW BROWN must be connected to the terminal which is CORD marked with the letter E or coloured GREEN GRIP f a standard 13 amp BS 1363 plug is used a 5 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 Rear panel connections azur Power Cambridge Audio Designed in London England Loudspeaker Terminals on or u pe A azur 740A Integrated Amplifier A Power Rating 230V AC 50Hz Max Power Consumption 750W Power ACau bd AR46 Impedance 4 8 ohms one pair 6 8 ohms per pair if two pairs E Important Please ensure that loudspeaker terminals are fully tightened Veuillez s assurer que les bornes de l enceinte sont enti rement serr es e000 a TE 0000 Control Bus OO ORO wo9u edel Z no oeu eder uraz eru tandur e indul zanduj Tandu QO OO O Pre Out Tape Rec In Tape RecOut2 Tape Rec Out 1 Input S Input 4 Input 3 Input 2 Input 1 input 6 Multi Room ingegnito IRL IR3 SRSC IR Emitter PSU Keypad 1 Keypad 2 Control Bus PassThru J o B ABUSaeapr errea tatez E IRA i OO OO www cambridge audio com 2 Power On Off Switches the unit on and off
10. Ready A BUS Ready outputs Psu Keypad bern allowing multi room capability One Y or two amplified keypads can be plugged into the 740A using ABS Cat5 5e cable and RJ45 plugs to provide multi room audio in one or two secondary rooms or zones The keypads are powered by an external PSU also required through the Cat5 5e cables and no mains connection is required in the secondary rooms Speakers e g SS10 connected via AS10 speaker cable Passive Speaker O KP10 EU keypad AS10 090000 Dea i egatik Active Gei Speaker BEE a EE O 1000 SaleaUooad Cat5 5e up to 30m 100ft 740A a x Cambridge Audio azur 740C The 740A is Incognito Ready Type I which means the keypads can operate independently of the amplifier in terms of volume bass treble etc be independently turned on and off from the 740A and each other but they can only listen to the same source as selected on the amplifier A BUS is a standard that allows compatibility between different manufacturers equipment so A BUS compatible keypads from other manufacturers can also be used If used with our own Incognito KP10 keypads there are some extra features such as the ability to change source on the 740A from the keypad Order of selection o9T9 o 1 Input 1 72 3 4 5d 2 1 O O In
11. a 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 140A x E l ZO Z Lu Cambridge Audio Ventilation IMPORTANT The unit will become hot when in use Do not place anything on top of the unit 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 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 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 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 Due to stray magnetic fields turntables or CRT TVs should not be located nearby due to possible interference Electroni
12. a short listening time Remedy User related fault The internal temperature of the output transistors has reached the over temperature limit The unit is not damaged although it should be left for 15 minutes to cool down before pressing the Standby button to resume normal operation 3 Overvoltage overcurrent detection Indication The display flashes OVERLOAD woe 0 e INPUT 1 9909 Volume Description CAP5 offers V I protection by constantly monitoring the output transistors to keep them working inside their Safe Operating Area SOA The SOA is a set of limits given by the output transistor manufacturer to ensure reliability When triggered the output relays disconnect the amplifier from the loudspeakers and the display shows a flashing OVERLOAD indication Remedy The resistance on the loudspeaker terminals may be too low Switch off power and check to see if there is a short circuit between the loudspeaker terminals before switching power on again Note If the indication remains the same and multiple loudspeakers are being used on each loudspeaker output then please remove a pair and retry If too many loudspeakers are connected to any amplifier causing 12 the load resistance to drop too low the amplifier will be overloaded CAP5 will detect this situation If the indication remains the same with only one set of loudspeakers connected there may be a fault with one or both of the loudspeakers
13. and closes the disc tray 3 Play Stop C Pause Press the relevant button to play stop or pause the CD u zel Right Skip Press once to skip forward by one track on the CD Press and hold to skip forwards through tracks Left Skip Press once to skip backward by one track on the CD Press and hold to skip backwards through tracks 6 Search Press and hold to search within the selected track Right button to fast forward left button to rewind Repeat Random Remain Refer to the Operating instructions section of your CD player manual for information on the functions of these buttons azur iPod compatibility To make use of the iPod functionality the iPod dock must be connected to Input 4 The 740A remote can also control the basic functions of Apple iPod models when mounted in Cambridge Audio s iPod docks Apple s Universal Dock or other docks compatible with the Apple Remote Refer to your dock s instruction manual on how to make connections To use the Azur remote to control the docked iPod hold down the Input 4 button whilst pressing one of the following buttons GO Play Pause Press to play the iPod press again to pause play Skip Press once to skip forwards or backwards one track 140A ENGLISH Cambridge Audio Connections When designing our amplifiers we have tried to include features that allow you to connect your system in various wa
14. ault setting When a source has a fixed input the balance is always set to neutral Press the Mode button to exit 10 On Off control menu When going in out of Standby mode the 740A can automatically turn on and off other connected Cambridge Audio Azur models that have control bus sockets For this feature to work the units must be connected together see diagram by RCA phono leads The sockets are colour coded orange on the rear panels of compatible Azur models Loop out from the 740A Control Bus Out to the Control Bus In on another Azur model e g 740C Continue the chain to other Azur models if required 640T V2 0 Now while the 740A is on press and hold the Standby On button unti ON OFF CTR appears on the display Volume Select the connected Azur models by pressing the appropriate input select button For example CA XXXC for an Azur CD player 540C V2 640C V2 CA XXXD for an Azur DVD player CA DAB T for an Azur DAB tuner etc Press ON amp OFF to scroll through the options of ON turns all Azur units on only OFF turns all Azur units into Standby only or ON amp OFF turns all Azur units on and into Standby mode Press OK to confirm and exit Multi room connections The 740A features Incognito one een E E
15. ause of some internal fault This is a rare fault although detecting it could just save those expensive loudspeakers Remedy Due to the necessary sensitivity of the DC protection circuit extremely hard clipping of the amplifier may cause DC protection to be triggered If this fault occurs please switch the unit off power up again and check operation with a reduced volume level If the DC fault occurs again please contact your dealer for service 2 Over temperature detection Indication Unit has switched off during operation display flashes OVER TEMP e Volume Description Over temperature is caused by a combination of high listening levels and low impedance speakers CAP5 includes temperature detection which constantly monitors the heat generated by the output transistors If the monitored temperature reaches a high level suitably within the limits of the output devices the amplifier will automatically switch into a fault mode The unit should ideally be left for 15 minutes in this state to cool down adequately If the unit has not fully cooled down then the temperature may reach the limit soon after the amplifier is powered up If the loudspeaker impedance is low the temperature of the amplifier may rise faster as the amplifier is working harder If the amplifier is mounted in a cabinet or the ventilation slots are obstructed the over temperature detection may activate reactivate after
16. bwoofer via the Line In inputs on the subwoofer Active subwoofer 740A Operating instructions The 740A has a custom made display on the front of the unit showing the current status and allowing you to access the 740A System Configure menus Here you can adjust the listening settings of the amplifier to personal preference The menu system is easy to navigate and control simply by using the input select buttons to turn a feature on solid circle or off no circle and the volume control knob to increase decrease settings Volume E lt O e Volume Adjust the volume control knob on the front panel or using the remote control The display will show the change in volume in decibels dB OdB indicates maximum volume while lower volume settings progress into the negative range This can also be changed to volume units 0 72 in the System Configure menu Speaker A B Speaker A B e PHPU Qs r2 mets INPUT 3 CH Press the Speaker A B button to scroll through the speaker sets connected via the rear panel speakers A B or A and B Volume Balance KEN D o Volume Press the Mode button to enter Balance mode BALANCE will appear on the display and can be adjusted using the volume control Press the Mode button again to retu
17. c 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 and 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 This unit has been designed to be left in Standby mode when not in use as this will increase the life of the amplifier this is true with all electronic equipment To turn the unit off switch off at 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 Do not overload wall outlets or extension cords 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 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 Battery disposal Please dispose of any discharged batteries according to local environmental ele
18. ctronic waste disposal guidelines Loudspeakers Before making any connections to loudspeakers make sure all power is turned off and only use suitable interconnects 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 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 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 ser
19. e 740A to be effectively used as a stereo power amplifier for that selected input only For example as well as operating as a pure stereo amplifier the 740A can provide the amplification for the front left and right channels of a surround sound setup with an AV receiver providing amplification for the other channels and controlling the overall system volume When listening in stereo use the 740A and connected stereo sources as normal for best possible sound quality For surround sound select the fixed level input you have chosen on the 740A and now use the AV receiver to control the volume select connected surround sound sources etc You may wish to re name the fixed level input as A V mode or similar on the 740A Make connections as below the left and right preamp outputs of the AV receiver connect to the fixed gain input chosen on the 740A As the gain can be fixed to any value it is easy to match the level of the 740A to that of the other AV channels Stereo mm TT TTT sources r Surround sound wr sources O9 0 Ol SB GI SR To set a fixed volume for a source select FIXED INP in the System Configure menu KS Mode e OEE Ga eiz Select the input required and set the fixed gain using the volume control the OFF setting does not disable the input but leaves the input gain subject to the volume control which is the def
20. ing an interconnect cable from the recorder s Line Out sockets to the amplifier s Tape In sockets The Tape Input circuit of the 740A is a monitor type different from the other 7 inputs For the 7 normal inputs the source selected for listening to will be sent out of the Tape Out for recording The source currently being listened to and optionally recorded is then shown on the front panel display However when the Tape Input is selected a solid circle will appear beside TAPE MON indicating that the Tape Input is now being listened to with a different source being sent out of the Tape Out for recording The recording source is also shown by a solid circle by the selected input and can be changed by pressing the other source buttons To switch Tape Monitor off simply press the Tape Mon input select button again toggling this function off This feature is most useful when using 3 head analog cassette decks which allow the signal being recorded to be played back live off tape via a 3rd head whilst it is simultaneously recorded It is then possible by toggling the Tape Monitor input on and off to compare directly in real time the original and recorded signal so that adjustments to the recording parameters of the tape machine can be made consult the manual of your 3 head analog cassette deck for full details 9 Inputs 1 5 These inputs are suitable for any line level source equipment such as CD players DAB or FM AM tuners etc Note
21. irector Important safety instructions 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 Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a dry cloth N OO FB WN 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 ABE specified by the manufacturer or sold with the appa
22. l 45W Standby 6W Shelving type Max bass boost cut 10 dB at 10 Hz Max treble boost cut 7 5 dB at 20 kHz 115 x 430 x 350mm 4 5 x 16 9 x 13 8 10 7kg 23 5Lbs 13 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 www cambridge audio com d 2009 Cambridge Audio Ltd g 8 N Qa lt
23. le load resistance is detected For more information refer to the CAP5 section of this manual Note When using one pair of speakers use speakers with a nominal impedance of between 4 8 ohms When using two pairs of speakers use speakers with a nominal impedance of between 6 8 ohms each 4 Mode Press to switch between Volume and Balance modes Press and hold to to enter the 740A System Configure menu 5 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 6 amp T Input select buttons Push the appropriate input selection button to select the source component that you wish to listen to highlighted by a solid circle on the display The signal selected is also fed to the Tape Out sockets so that it may be recorded The input should not be changed whilst recording but the recorded signal can be checked using the tape input Tape Monitor Display LCD used to control the 740A Please refer to the Operating instructions and Amplifier setup section of this manual for more information 9 Bass and Treble Press to release and rotate to allow subtle adjustments to the tonal balance of the sound Direct This control gives the audio signal a more direct path to the power amplifier stage of your amplifier bypassing the tone control circuits for the purest possible sound quality aa Volume
24. 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 For any service in or out of warranty please contact your dealer Plug Fitting Instructions UK Only The cord supplied with this appliance is factory fitted with a UK mains plug fitted with a 5 amp fuse inside If it is necessary to change the fuse it is important that a 5 amp fuse 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 green E connected to the terminal which is marked with YELLOW the letter N or coloured BLACK FUSE The wire which is coloured BROWN must be BLUE connected to the terminal which is marked with N the letter
25. ocal Cambridge Audio dealer or visit www cambridge audio com Custom installation C I use The 740A features a Control Bus input output IR Emitter Control Bus that allow un modulated remote control Out commands positive logic TTL level to be received electrically by the unit and looped to 6 another unit if desired These control commands are typically generated by custom installation multi room systems or remote IR receiver systems The Control Bus sockets are colour coded orange 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 The 740A is also fitted with dip switches which can be set for different C I configurations When the 740A is used in a cupboard or when using routed IR it may be desirable to disable the Front Panel IR by setting the dip switch to Off ff By default all Cambridge Audio source equipment loop the E Hu Control Bus signals from In to Out If several units are used in a complete loop set the Control Bus Passthru dip switch to Off Control Bus PassThru R In addition the units feature direct IR Control codes as well as toggle codes for some of their features to simplify programming custom installation systems Special direct On Off and Mute commands can be accessed on the su
26. oming out of Standby mode To turn this feature off press the VOL RAMP input select button in the System Configure menu and set to off Press the Mode button to exit Cambridge Audio Amplifier setup continued Volume display gt Q Volume To change the volume display from decibels 84 to OdB to arbitrary volume units O to 72 units select VOL DB in the System Configure menu Press the input select button to turn off the volume in decibels Press the Mode button to exit Input gain trim The relative levels of the inputs can be adjusted by gain trim This allows each to be adjusted so that each sounds the same in terms of average loudness when you switch between them Pick the loudest sounding source and trim its level until it matches the average perceived level of the others Repeat this process if other sources also stand out as louder than the average a Mode e 5 j 6 fi o Volume To set the input gain trim for each source select INP TRIM in the System Configure menu Select the input required and use the volume control to set the gain between O and 12 dB the available range is restricted if the volume is set very low Press the Mode button to exit Fixed level inputs Any input of the 740A is able to be set for fixed gain Whenever this input is selected the gain will automatically go to this value and will not be adjustable by the volume control This feature allows th
27. pecifications 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 Introduction 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
28. pplied remote control for teaching into C I systems as follows 1 Press and hold the Standby On button The remote first generates it s 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 2 Press and hold the Mute button The remote first generates it s 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 A full code table for this product is available on the Cambridge Audio website at www cambridge audio com 11 740A ENGLISH Cambridge Audio CAP5 Fiveway protection system Cambridge Audio has developed a proprietary protection system to ensure reliability and a long life for its amplifiers and the speakers they are connected to Note Due to the required sensitivity of the CAP5 system it is possible that mains power disturbances can falsely trigger CAP5 in extreme situations This protection system comprises of five main protection methods 1 DC detection Indication Unit has switched off during operation display flashes DC ERROR Mode Volume Description CAP5 offers loudspeaker protection if the output of the amplifier goes to a high constant voltage DC bec
29. put 2 1 6 K XX 3 Input 3 4 Input 4 5 Input 5 6 Input 6 Tape Connections to the 740A s Incognito Ready A BUS Ready outputs are made by Cat 5 cable terminated with an RJ45 jack plug The RJ45 plug must be wired to the EIA TIA 568A wiring standard azur Wire colours 3 Orange White 6 Orange 1 Green White 4 Blue 7 Brown White 2 Green 5 Blue White 8 Brown A 4 2 IU iiin III Ji ug view from View into contact end socket P Crimp wires securely in place Gather pairs trim and insert into RJ45 plug To allow control of your source equipment from the remote rooms an IR emitter IR10 is plugged into one of the IR outputs on the rear of the unit and then attached over the IR window of the source unit Alternatively on our own products that feature IR emitter Inputs a mini jack to mini jack lead can be used Commands received by the keypads can now be sent back to the source equipment via the 740A It is then possible to control the source equipment from the remote rooms by using the source equipment s own remote controls or through a learning remote The Incognito LR10 Learning Remote can fully control the keypads learn the source s remote control codes including those from other manufacturers and change source input on the 740A etc For further details on the Incognito multi room system please contact your l
30. ratus 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 co
31. rn to Volume mode or wait 5 seconds for the 740A to automatically exit Balance mode Bass and Treble te Zr d EM 9 BE 9 OOO These controls allow subtle adjustments to the tonal balance of the sound Press to release and rotate to adjust press back in when desired settings found An icon appears on the display to show if Bass Treble has been adjusted In the central position these controls have no effect These controls only modify the sound through your loudspeakers and the Pre Out sockets they do not affect the signals sent through the Tape Out connections With a well produced CD and a good system the tone controls are unnecessary and can be switched out by pressing the Direct button e INPUT 1 Bass Webe Direct o ser o This completely removes them from the signal path for maximum fidelity If the musical recording is of poor quality or other factors are affecting the sound quality it may be necessary to adjust the tone controls to compensate azur 740A Amplifier setup The 740A features many advanced settings that allow it s use to be customised to user preference The inputs can be named to reflect the actual source units you have each input can be trimmed so that each sounds the same in terms of loudness when you switch between them and other options ENGLISH Changing input names source naming we fe ak EXT CHARe Gr O NICE COUT i
32. tion section for more information Front Panel IR Set to On for normal operation Control Bus Passthru Turns on off looping of Control Bus signals from Input to Output Reserved Not used 5 IR Infrared Emitter In Allows modulated IR commands from multi room 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 6 A BUS Ready Incognito Ready multi room outputs PSU Connect an Incognito PS5 to supply power to the connected multi room keypads speakers Keypad 1 2 Connect one or two Incognito A BUS KP10 keypads or other A BUS compatible keypads using CAT5 5e cable Incognito AS10 Active Ceiling Speakers can also be connected here IR Four IR outputs for remote control of source equipment Please refer to the Multi Room section of this manual for more information on connections and set ups 7 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 Also allows the 740A to control some Cambridge Audio units Pre Out Connect these sockets to the inputs on an external power amplifier s or active subwoofers etc 9 Tape Rec In Out Connect to a tape deck or to the analog output sockets on a MiniDisc portable digital music player or CD recorder us
33. 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 Authority s Radio communications and EMC requirements Ross Test Stamp a 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 C 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 antenn
34. ver 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 azur Risk of electric Risque de choc Vorm ffnen shock electrique des ger tes Do not open Ne pas ouvrir Netzstecker ziehen 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 WEEE symbol The crossed out wheeled bin is the European Union symbol m 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
35. vice 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 made a purchase 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
36. volume levels when the output signal attempts to go outside the maximum voltage that the amplifier can provide causing the tops of the signal to flatten off When CAP5 detects clipping the volume will be automatically reduced down until CAP5 detects an undistorted output It is possible to disable the clipping detection feature by pressing the CLIP DT button to off when in the 740A System Configure menu Note Disabling the clipping detection is not advised as this feature has been added deliberately to protect the amplifier and loudspeakers 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 source component is properly connected Check that TAPE MON is not switched on unless tape input is required Check that your speakers are properly connected If using Speaker B terminals check they are switched on Make sure unit is not in mute mode There is no sound on one channel Ensure that balance control is in the correct position Check speaker connections Check interconnects There is a loud buzz or hum Check turntable or tone arm for ground and connection lead fault Ensure no interconnects are loose or defective Ensure that your tape deck turntable is not too close to the amplifier
37. ys The inclusion of features such as Pre Out and Speaker B connections mean that you can flexibly configure your system depending on your requirements Basic connection The diagram below shows the basic connection of your amplifier to a CD player and a single pair of loudspeakers 740A ba Cambridge Aude j 00600 Tape connection The diagram below shows how to connect the amplifier to a tape recorder or other source with a record and monitor connection Please note that either of the tape outputs can be used as they are both the same signal in parallel 740A alk 00O Speaker B connections The Speaker B connections on the back of the amplifier allow for a second set of speakers to be used i e speakers located in another room The Speaker A B button on the front panel allows this second set of speakers to be switched on and off Note When using two pairs of speakers use speakers with a nominal impedance of between 6 8 ohms each minimum B lt a Preamp Out connections The Preamp Out sockets are for connecting to the input sockets of a power amplifier or active subwoofer The diagram below shows how to connect the amplifier to an active su
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