Custom installation C.I. use | Cambridge Audio Azur 840E manual

IR Emitter Control Bus

Custom installation (C.I.) use

The 840E features a Control Bus input/output that

allow un-modulated remote control commands	In	In	Out
allow un-modulated remote control commands
(positive logic, TTL level) to be received electrically
by the unit and looped to 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.

An RS232C port is also featured which allows the 840E to be controlled by C.I. systems.

In addition the unit features ‘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 supplied 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 and RS232 protocol for this product is available on the Cambridge Audio website:

www.cambridge-audio.com

Technical specifications

THD (+ noise)	< 0.0006% @1kHz
	< 0.003% @20kHz
S/N (unweighted)	< 121dBr
	< 100dBu
Frequency response	10Hz - 100kHz ± 0.1dB
Crosstalk @1kHz	> 100dB
Input isolation	> 115dB
Maximum output	8V rms unbalanced
	8V + 8V rms balanced
Output impedence	100 Ohms (Unbalanced or Balanced)
Subwoofer out	Flat or 200Hz 2nd Order Butterworth LPF
Max power consumption	36W
Bass & Treble controls	Shelving type
	Max bass boost/cut ± 10 dB at 10 Hz
	Max treble boost/cut ± 7.5 dB at 20 kHz
Dimensions (H x W x D)	115 x 430 x 385mm
	(4.5 x 16.9 x 15.2”)
Weight	8.7kg (19.1Lbs)

azur 840E

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 Input 8 (Rec In) is not switched on (unless a tape input is required).

Check that your speakers are properly connected.

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 unit.

Unable to make or play tape recordings

Check that Input 8 (Rec In) and Rec Out have been connected correctly.

There is weak bass or diffused stereo imaging

Ensure that speakers are not wired out of phase.

The remote handset will not function

Check that the batteries have not expired.

Ensure that nothing is blocking the remote sensor.

For more frequently asked questions (FAQs), technical advice and information on getting the most out of your 840E, please visit the Support section on Cambridge Audio’s website: www.cambridgeaudio.com/support.php

For all servicing, in or out of warranty, please contact your dealer.

ENGLISH

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.