[. . . ] Pre-Amplifier User's manual 2
azur
840E
Your music + our passion
ENGLISH
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 and prolong the life of the unit: 1. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or grounding-type plug. [. . . ] The 840E is designed to work at its highest performance when a balanced interconnect is used. The diagrams below shows the 840E pre-amplifier connected to an Azur 840C CD player in unbalanced (Figure 1) and balanced (Figure 2) configurations. The 840E can also be connected to non Cambridge Audio sources with balanced outputs. Balanced connections in an audio system are designed to reject electrical noise, from power wiring etc, and also the effects of noise currents flowing through ground connections. The basic principle of balanced interconnection is to get the signal you want by subtraction, using a three-wire connection. One signal wire (the hot or in-phase) carries the normal signal, while other (the cold or phase-inverted) carries an inverted version. The balanced input senses the difference between the two lines to give the wanted signal. Any noise voltages that appear identically on both lines (these are called common-mode signals) are cancelled by the subtraction. Make sure the Balanced/Unbalanced switch for Inputs 1 and 2 are set to the connection type you wish to use.
Figure 1: Unbalanced input
Figure 2: Balanced input
840E
Multi-Room
Keypad 1 IR1 IR3
840E
Input 2 Balanced Audio Input 1 Balanced Audio
GND
Multi-Room
Keypad 1 IR1 IR3
Input 2 Balanced Audio
Input 1 Balanced Audio
GND
Power
Designed in London, England
Trigger
In Out/Thru
IR Emitter
In
Control Bus RS232C
In Out
International Patent Pending LeisureTech Electronics Pty Ltd
Power
Designed in London, England
Trigger
In Out/Thru
IR Emitter
In
Control Bus
In Out
International Patent Pending LeisureTech Electronics Pty Ltd
azur 840E Pre-Amplifier
On Off
PSU
In On Off
RS232C
azur 840E Pre-Amplifier
Power Rating: 230V AC ~ 50Hz Max Power Consumption: 36W
PSU
In
Power Rating: 230V AC ~ 50Hz Max Power Consumption: 36W
www. cambridge-audio. com
CAUTION
Risk of electric shock. Do not open.
www. cambridge-audio. com
Keypad 2
Flat / 200Hz L. P.
AVIS
Risque de choc electrique. Netzstecker ziehen.
IR2 Input 7 Input 7
Loop
IR4 Input 5 Input 5 Input 6 Input 6
Right Input 4 Input 4
Left Input 3 Input 3
Right Input 2 Input 2
(Unbalanced)
Left Input 1
Balanced
CAUTION
Risk of electric shock. Netzstecker ziehen.
Keypad 2
Flat / 200Hz L. P.
IR2 Input 7 Input 7
IR4 Input 5 Input 5 Input 6 Input 6
Right Input 4 Input 4
Left Input 3 Input 3
Right Input 2 Input 2
(Unbalanced)
Left Input 1
Balanced
Input 1
Balanced
Power AC
Manufactured in an ISO9001 approved facility
GND
Unbalanced
Power AC
Manufactured in an ISO9001 approved facility
Pre Out
Right
Left
Sub Out
Rec Out 2
Rec Out 1
Rec In
Input 1
(Unbalanced)
Input 2
GND
Pre Out
Right
Left
Sub Out
Rec Out 2
Rec Out 1
Rec In
Input 1
(Unbalanced)
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference; 2) This device must accept any interference, including interference that may cause undesired operation.
Phono/RCA
3098092
Conforms to ANSI/UL STD 60065 7th Edition 2003 Rev 2006/03/20 Certified to CAN/CSA STD C22. 2 No. 60065-03
GND
XLR
3098092
Conforms to ANSI/UL STD 60065 7th Edition 2003 Rev 2006/03/20 Certified to CAN/CSA STD C22. 2 No. 60065-03
GND
840C
840C
Power syncing (On/Standby control)
When going in/out of Standby mode the Azur 840E pre-amplifier can (if desired) automatically control the 840W when connected via the Control Bus sockets (the Control Bus sockets are colour-coded orange on the rear panels of compatible Azur models). For this feature to work the units must be connected together by RCA/phono leads. Connect the Control Bus Out from the 840E to the Control Bus In on the 840W. Continue the chain to other Azur models if it is required to sync more units (refer to the 840E's own manual for more information as this requires some setup). Note: The 840E features a Trigger Out which can alternatively be used to control the 840W's Standby/On status if desired. Again, the procedure is simply to connect the two units together (using a 3. 5mm to 3. 5mm mono mini-jack lead in this case). Control Bus is the recommended method when using an 840E and other Cambridge Audio equipment with Control Bus In/Out. [. . . ] 60065-03
GND
The 840E is Incognito Ready Type II, which means the keypads can operate independently of the amplifier in terms of volume/bass/treble etc, be independently turned on and off, and can also listen to a different source from that which is currently 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 840E from the keypad (EU model shown here):
Order of selection: 1. Input 6 (Tape)
14
R
R
R
R
L
L
L
L
Rec In
Rec Out 1
Rec Out 2
Balanced Pre Out
Pre Out
Unbalanced
Input 1
Balanced
Unbalanced
Input 2
Mode
Volume
Fig. [. . . ]