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Cambridge Audio 840A - page 1
azur 840A Class XD Integrat ed Amplifier User’s Manual ...
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Cambridge Audio 840A - page 2
2 Azur Class XD integrat ed amplifier Introduction .................................................................................................3 Safety precautions ......................................................................................4 Important safety instructions ............................................................... ...
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Cambridge Audio 840A - page 3
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 3 Thank you for purchasing this Azur 840A Class XD Integrated Amplifier. This unit is part of our new '8' Series taking Cambridge Audio to new levels of audio excellence as part of our commitment to the on -g g oing development of the Azur range. We hope that you wil ...
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Cambridge Audio 840A - page 4
4 Azur Class XD integrat ed amplifier Che cki ng the Power Sup ply Rat ing For your o wn safety please read the f ollowing instructions carefully before att empting to connect this unit to the mains. Check that the rear of your unit indicates the correct supply v oltage. If your mains supply voltage is different, consult your dealer . This unit is ...
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Cambridge Audio 840A - page 5
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 5 IMPORT ANT SAFET Y INSTRUCTIONS Please take a moment t o read these notes bef ore installing your Azur amplifier , they will enable y ou to get the best performance and prolong the life of the pr oduct. We advise y ou follow all instructions, heed all warnings and k eep the ...
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Cambridge Audio 840A - page 6
6 Azur Class XD integrat ed amplifier Power On/Off Switches the unit on and off. A C power socket Once you ha ve completed all connections t o the amplifier , plug the A C power cable int o an appropriate mains sock et then switch on. Y our amplifier is now ready f or use. Loudspeaker terminals T wo sets of loudspeaker terminals are a vailable, A ( ...
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Cambridge Audio 840A - page 7
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 7 RS232 C The RS232C por t allows e xternal serial control of the 840A f or custom install use. A full command set is av ailable on the Cambridge Audio website at www.cambrid ge -a a udio .com . This por t can also be used by Cambridge Audio service personnel for software upda ...
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Cambridge Audio 840A - page 8
8 Azur Class XD integrat ed amplifier Standby/ On Switches the unit between Standby mode (indicat ed by dim pow er LED) and On (indicated b y bright power LED). Standby is a lo w power mode where the power consum ption is less than 10 W atts. The unit should be left in Standby mode when not in use. Phone s Allows f or the connection of stereo headp ...
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Cambridge Audio 840A - page 9
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 9 Mod e Press to switch between V olume and Balance modes. Press and hold to to ent er the 840A system configure menu. Infrared sensor Receiv es IR commands from the supplied Azur remote contr ol. A clear unobstructed line of sight between the remo te control and the sensor is ...
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Cambridge Audio 840A - page 10
10 Azur Class XD integrated am plifier The 840A is supplied with an Azur Navigator remo te control that operates both this am plifier and Cambridge Audio Azur CD play ers. Inser t the supplied AAA batteries to activ ate. The 840A/C remote contr ol comes with an Amplifier Control butt on, that when pressed, puts the remote into Amp mode , allowing o ...
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Cambridge Audio 840A - page 11
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 11 When designing our amplifiers we ha ve tried to include f eatures that allow you t o connect your system in v arious ways. The inclusion of features such as Pre-Out and Speak er B connections mean that you can flexibly configure your syst em depending on your requirements. ...
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Cambridge Audio 840A - page 12
12 Azur Class XD integrat ed amplifier CONNECTIONS (CONTINUED) Speaker B connecti ons The Speaker B connections on the back of the amplifier allo w for a second set of speakers to be used (i.e. speak ers located in another room). The Speak er A/B button on the front panel allo ws this second set of speakers to be switched on and off. Note: When usi ...
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Cambridge Audio 840A - page 13
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 13 Balanced audio connections The diagram below shows ho w to connect the 840A to the Azur 840C Upsampling CD play er using the Balanced Audio inputs via three-pin XLR connectors (Not e: the 840A can also be connected to non-Cambridge Audio sources with balanced outputs). Bala ...
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Cambridge Audio 840A - page 14
Balanc e Press the Mode button t o enter Balance mode. BALANCE will appear on the display and can be adjust ed using the volume control. Press the Mode button again to return t o V olume mode or wait 5 seconds for the 840A to automatically e xit Balance mode. Bass and Treble These controls allo w subtle adjustments to the tonal balance of the sound ...
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Cambridge Audio 840A - page 15
The 840A features man y advanced settings that allow its use to be be customised to user pref erence. The inputs can be named t o reflect the actual source units you ha ve, each input can be trimmed so that each sounds the same in terms of loudness when you switch betw een them and other options. Changing input names / source naming Press and hold ...
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Cambridge Audio 840A - page 16
16 Azur Class XD integrated am plifier Volume display T o change the volume display from decibels (-84 t o 0dB) to arbitrary volume units (0 to 72 units) select V OL DB in the System Configure menu. Press the input select button t o turn of f the volume in decibels. Press the Mode button t o exit. Input gain trim The relative le vels of the inputs ...
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Cambridge Audio 840A - page 17
Select the connected Azur models b y pressing the appropriate input select button. F or example, CA XXX C for an Azur CD pla yer (540C V2, 640C V2), CA XXXD for an Azur D VD player , CA DAB T f or an Azur DAB tuner etc. Press ON & OFF to scr oll through the options of ON (turns all Azur units on only), OFF (turns all Azur units into Standby onl ...
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Cambridge Audio 840A - page 18
The 840A features Incognit o Ready TM / A-BUS TM Ready outputs, allowing multi-room capability . One or two am plified keypads can be plugged int o the amplifier (using Cat5/5e cable and RJ45 plugs) to pr ovide multi- room audio in one or two secondary rooms or zones. The k eypads are powered b y an external PSU (also req uired) through the Cat5/5e ...
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Cambridge Audio 840A - page 19
It is then possible to contr ol the source equipment from the remo te rooms b y using the source equipment's own remo te controls or thr ough a learning remote. The Incognit o LR10 can fully contr ol the ke ypads, “learn” the source's remot e control codes (including those from o ther manufacturers) and change source input on the am p ...
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Cambridge Audio 840A - page 20
20 Azur Class XD integrat ed amplifier If the unit has not fully cooled down then the t emperature may reach the limit soon after the amplifier is powered up. If the loudspeak er impedance is low the t emperature of the amplifier may rise f aster as the amplifier is working harder . If the amplifier is mounted in a cabinet or the ventilation slots ...
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Cambridge Audio 840A - page 21
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 21 It is possible to disable the short circuit detection f eature by pressing the SHORT D T button to off when in the 840A System Configure menu. This would only be required if the loudspeak ers have v er y low DC resistance. 5. Intelligent clipping detection Indication - V ol ...
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Cambridge Audio 840A - page 22
22 Azur Class XD integrat ed amplifier There is no power Ensure the AC po wer cord is connect ed securely . Ensure the plug is fully inser ted int o 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 Standb y mode. Check that source component is pr operly connected. Check tha ...
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Cambridge Audio 840A - page 23
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 23 840 A Power Output 120W RMS into 8 Ohms 200W RMS into 4 Ohms THD (unweighted) < 0.00 15% 1 kHz at 80% of rated pow er < 0.0 15% 20 Hz - 20 kHz at 80% of rated pow er Frequency Response 1 0 Hz - 50 kHz +/- 1 dB S/N ratio (ref 1W/8 Ohm) > 83 dB Input impedance s Inpu ...
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Cambridge Audio 840A - page 24
Cambridge Audio warrants this pr oduct to be free fr om defects in materials and workmanship (subject t o the terms set f or th below). Cambridge Audio will repair or replace (at Cambridge A udio's option) this product or an y defective parts in this product. W arranty periods may vary from country to country. If in doubt consult your dealer a ...
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Cambridge Audio 840A - page 25
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 25 ...
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Cambridge Audio 840A - page 26
azur 840A Par t No. AP18646/2 w w w . c a m b r i d g e -a a u d i o . c o m ...
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