Input (Source) connections

Inputs 1 and 2 on the 840E feature either unbalanced (phono/RCA) or balanced (XLR) connections. 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

840E

Power

OnOff

CAUTION AVIS ACHTUNG

Power AC

840C

 

 

 

 

 

 

 

 

Multi-Room

 

Input 2 Balanced Audio

 

Input 1 Balanced Audio

 

 

 

 

 

 

 

 

 

 

 

 

Keypad 1

IR1

IR3

 

 

 

 

 

 

 

 

 

Designed in London, England

 

Trigger

IR Emitter

Control Bus

RS232C

 

 

 

 

 

 

 

 

 

 

Power

Off

Designed in London, England

Power Rating: 230V AC ~ 50Hz

In

Out/Thru

In

In

Out

PSU

 

 

 

 

 

 

 

 

 

On

Power Rating: 230V AC ~ 50Hz

azur 840E Pre-Amplifier

 

 

 

 

 

 

 

 

 

 

 

 

azur 840E Pre-Amplifier

 

 

 

 

 

 

 

In

 

 

 

 

 

 

 

 

 

 

 

 

Max Power Consumption: 36W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max Power Consumption: 36W

www.cambridge-audio.com

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION AVIS

ACHTUNG

www.cambridge-audio.com

 

 

 

 

 

 

 

 

Keypad 2

IR2

IR4

Right

Left

 

Right

Left

Balanced

 

 

Out Pre

 

Balanced Pre Out

 

Flat / 200Hz L.P.

2 Out Rec

1 Out Rec

In Rec

7 Input

6 Input

5 Input

4 Input

3 Input

2 Input

1 Input

 

 

 

 

L

L

L

L

Unbalanced

Input 1

Balanced

R

R

 

 

 

R

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unbalanced

Power AC

Manufactured

Pre Out

Right

Left

Sub Out

Rec Out 2

Rec Out 1

Rec In

Input 7

Input 6

Input 5

Input 4

Input 3

Input 2

Input 1

Input 2

Manufactured

 

 

 

 

 

 

 

 

 

 

 

 

(Unbalanced)

(Unbalanced)

 

in an ISO9001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

in an ISO9001

approved facility

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

approved facility

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

840C

 

 

 

 

 

 

 

 

Multi-Room

 

Input 2 Balanced Audio

 

 

 

 

 

 

 

 

 

Keypad 1

IR1

IR3

 

 

 

Trigger

 

IR Emitter

Control Bus

RS232C

 

 

 

 

 

 

 

In

Out/Thru

 

In

In

Out

PSU

 

 

 

 

 

 

 

 

 

 

 

 

 

In

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Keypad 2

IR2

IR4

Right

Left

 

Out Pre

 

Balanced Pre Out

 

Flat / 200Hz L.P.

2 Out Rec

1 Out Rec

In Rec

7 Input

6 Input

5 Input

4 Input

3 Input

L

L

 

 

 

 

L

 

 

 

 

 

 

 

R

R

 

 

 

 

R

 

 

 

 

 

 

 

Pre Out

 

Right

Left

 

Sub Out

Rec Out 2

Rec Out 1

Rec In

Input 7

Input 6

Input 5

Input 4

Input 3

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

Input 1 Balanced Audio

Balanced

Unbalanced

Input 1

Balanced

 

 

R

 

 

Unbalanced

Input 2

Input 1

Input 2

(Unbalanced)

(Unbalanced)

 

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. No futher setup is necessary.

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.

Trigger In/Out can be useful if the 840W (and indeed 840E) is desired to be controlled by other equipment that features trigger outputs (Custom install and/or Multi-Room Systems etc).

 

 

 

Loudspeaker Terminals - Right

 

 

 

 

 

 

Impedance 4 - 8 ohms

 

 

 

 

 

 

 

 

Bridged

 

 

 

 

 

 

only!

 

 

 

 

Class 2 Wiring

 

 

 

 

 

Balanced Audio - Right

Unbalanced

 

 

 

Input

Loop Output

Audio - Right

 

 

 

 

 

 

Input

 

 

In

Loop

 

 

 

 

 

1 = Ground

 

 

 

 

 

2 =

 

 

 

 

 

 

3 =

 

 

 

 

 

 

 

 

 

Loop Output

 

Power

 

Designed in London, England

 

Trigger

 

 

 

azur 840E Pre-Amplifier

In

Out/Thru

On

 

Off

Power Rating: 230V AC ~ 50Hz

 

 

 

 

 

 

 

 

 

 

Max Power Consumption: 36W

 

 

CAUTION

AVIS

ACHTUNG

www.cambridge-audio.com

 

 

IMPORTANT!

Only change modes

when unit is off.

Refer to Manual for more information.

Stereo

Mono

Mono Mode

Bi-Amp

BridgedBridged

Use Left Input for Bridged / Bi-Amp operation.

Right

Input Type

Balanced

Unbalanced

IR Emitter

In

Designed in London, England

azur 840W Class XD Power Amplifier

www.cambridge-audio.com

On

Off

 

Power AC

Power Rating: 230V AC ~ 50Hz

Max Power Consumption: 1600W

CAUTION AVIS ACHTUNG

Control Bus

RS232C

 

In

Out

PSU

 

 

 

In

In

Control Bus

Out

In

Trigger

Out/Thru

IR Emitter

In

Left

Input Type

Balanced

N1863

Unbalanced

AЯ46

Multi-Room

Keypad 1

IR1

 

Loudspeaker Terminals - Left

 

Impedance 4 - 8 ohms

Bridged

 

 

only!

 

 

 

Class 2 Wiring

 

Unbalanced

Balanced Audio - Left

Audio - Left

Input

Loop Output

Input

 

 

In Loop

1 = Ground

2 =

3 =

Loop Output

Manufactured in an ISO9001 approved facility

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

Input 2 Balanced Audio

Input 1 Balanced Audio

IR3

GND

840W

840E

Out Pre

Balanced Pre Out

Flat / 200Hz L.P.

2 Out Rec

1 Out Rec

Keypad 2

IR2

IR4

 

Right

Left

Right

Left

Balanced

In Rec

7 Input

6 Input

5 Input

4 Input

3 Input

2 Input

1 Input

 

L

L

 

 

 

L

 

 

 

 

 

 

 

 

L

Unbalanced

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balanced

R

R

 

 

 

R

 

 

 

 

 

 

 

 

R

 

Power AC

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

Unbalanced

Manufactured

Pre Out

Right

Left

Sub Out

Rec Out 2

Rec Out 1

Rec In

Input 7

Input 6

Input 5

Input 4

Input 3

Input 2

Input 1

Input 2

 

 

 

 

 

 

 

 

 

 

 

 

(Unbalanced)

(Unbalanced)

 

in an ISO9001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

approved facility

 

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.

 

 

 

 

8

Page 7 Page 9
Page 8
Image 8
Cambridge Audio Azur 840E user manual Input Source connections, Power syncing On/Standby control
Page 7 Page 9

Azur 840E specifications

The Cambridge Audio Azur 840E is a high-performance preamplifier that embodies the brand's commitment to delivering exceptional sound quality and innovative design. Known for its rich heritage in audio engineering, Cambridge Audio has built the 840E to cater to discerning audiophiles who seek a refined listening experience.

One of the standout features of the Azur 840E is its dual mono design. This architecture allows the audio signal to remain as pure as possible by using separate circuits for the left and right channels. This isolation minimizes crosstalk and enhances the overall clarity, ensuring a more immersive audio experience. The preamp's selection of high-quality components further contributes to its superior sound performance, allowing it to accurately reproduce music with depth and detail.

Integrating advanced technologies, the 840E includes Cambridge's proprietary 'ALPS Blue Velvet' volume control. This high-end potentiometer offers smooth and precise volume adjustments, eliminating channel imbalance and enhancing the precision of your sound. The preamp also features custom-designed capacitors and resistors, ensuring that only the best components are used to optimize sound quality.

Another noteworthy characteristic of the Azur 840E is its extensive connectivity options. It offers a comprehensive selection of inputs and outputs, including balanced XLR outputs, unbalanced RCA outputs, and a range of inputs for connecting various audio sources. This versatility makes it an ideal choice for audio enthusiasts who want to integrate the preamp into a more complex audio setup.

Moreover, the 840E also features a sophisticated remote control system, providing users convenience without compromising on performance. The intuitive layout allows for easy access to key functions, making it simple to tailor your listening experience.

In terms of build quality, the Cambridge Audio Azur 840E is designed with a robust metal chassis that reduces resonance and interference, further improving sound fidelity. Its sleek, modern aesthetics make it an attractive addition to any audio system.

In summary, the Cambridge Audio Azur 840E is a premium preamplifier that combines high-end audio performance with striking design and advanced features. Its dual mono architecture, superior volume control, extensive connectivity, and high-quality components make it a standout choice for audiophiles looking to elevate their audio experience.
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