Instruction/ maintenance manual of the product 840A Cambridge Audio
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azur 840A Class XD Integrat ed Amplifier User’s Manual.
2 Azur Class XD integrat ed amplifier Introduction .................................................................................................3 Safety precautions ..................................................................................
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.
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.
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.
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.
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 .
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.
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.
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.
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.
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.
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).
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
840A Class XD int egrated am plifier Azur Class XD integrat ed amplifier 25.
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.
An important point after buying a device Cambridge Audio 840A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Cambridge Audio 840A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Cambridge Audio 840A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Cambridge Audio 840A you will learn all the available features of the product, as well as information on its operation. The information that you get Cambridge Audio 840A will certainly help you make a decision on the purchase.
If you already are a holder of Cambridge Audio 840A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Cambridge Audio 840A.
However, one of the most important roles played by the user manual is to help in solving problems with Cambridge Audio 840A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Cambridge Audio 840A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
