Cambridge Audio Azur 840W user manual Custom installation C.I. use, Technical specifications

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IR Emitter Control Bus
In In Out

Custom installation (C.I.) use

The 840W features a Control Bus input/output that 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.

The unit responds to ‘direct’ IR/Control codes as well as toggle codes for some features to simplify programming custom installation systems. Special direct On/Off and Mute commands can be accessed from the 840E pre-amplifier remote control for teaching into C.I. systems as follows:

1.Press and hold the Standby/On button. The remote first generates a 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 a 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.

These commands are recognised by the 840W via the IR Emitter input.

A code table for this product is available on the Cambridge Audio website:

www.cambridge-audio.com

Technical specifications

Power Output - Stereo/Mono

200W per channel 8 Ohms

 

350W per channel 4 Ohms

Power Output - Bridged Mono

500W 8 Ohms

 

800W 4 Ohms

THD (unweighted)

< 0.001% 1kHz

 

< 0.005% 20Hz - 20kHz

Frequency Response

5Hz - 80kHz -1dB

S/N ratio (ref 1W/8 Ohm)

> 90 dB (unweighted)

Sensitivity

Stereo or Mono =

(for 200W 8 Ohms)

1.5V rms unbalanced

 

1.5 + 1.5V rms balanced

 

Bridged Mono =

 

0.775V rms unbalanced

 

0.775V + 0.775V rms balanced

Input impedances

Balanced input 38 kOhm

 

Unbalanced input 68 kOhm

Damping factor

> 125 at 1 kHz

Trigger In

5 - 12V AC or DC

Trigger Out

12V DC @ 100mA

Power consumption

Maximum 2400W

 

Active (no signal) < 180W

 

Standby < 5W

Dimensions (H x W x D)

148 x 430 x 365mm

 

(5.8 x 16.9 x 14.4”)

Weight

19.1kg (42.1lbs)

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Contents Azur 840W Important safety instructions Limited warranty Contents IntroductionRear panel connections Front panel controls Unbalanced stereo connections ConnectionsBalanced stereo connections Bi-wired stereo connections Power syncing On/Standby controlAdvanced connections Bridged dual mono connections Important 840W settingsBi-amped dual mono connections Use Left Input for Bridged / Bi-Amp operationCustom installation C.I. use Technical specificationsTroubleshooting AP21005/3

Azur 840W specifications

The Cambridge Audio Azur 840W is a high-performance power amplifier that exemplifies the cutting-edge technology and craftsmanship that the brand is known for. Designed to deliver a dynamic and engaging audio experience, the 840W is ideal for audiophiles who demand excellence in sound reproduction.

One of the standout features of the 840W is its robust construction. The amplifier is housed in a solid chassis that minimizes unwanted vibrations, ensuring that the sound remains clear and uncolored. Its sleek design not only adds elegance to any audio setup but also incorporates functional elements that enhance performance.

The Azur 840W boasts an impressive power output of 200 watts per channel at 8 ohms, and this doubles to 400 watts per channel at 4 ohms. This high power output allows for the amplification of even the most demanding speakers, delivering a controlled and powerful soundstage. The advanced toroidal transformer design ensures high efficiency and low levels of distortion, which is crucial for maintaining audio fidelity.

Cambridge Audio incorporates innovative technologies such as the Class XD amplification in the 840W. This hybrid technology combines the efficiency of Class D amplification with the sonic qualities of Class A/B design. As a result, users benefit from a clean and detailed sound with minimal distortion, allowing them to experience their music as intended by the artists.

The amplifier features a fully balanced design, including balanced XLR inputs that reduce noise and interference, especially in longer cable runs. This enables users to connect high-quality sources without compromising audio integrity. Additionally, the speaker outputs are designed to accommodate various types of speaker configurations, providing flexibility in setup.

Another notable characteristic of the Azur 840W is its thermal management system. The amplifier uses an efficient heat sink design along with a refined ventilation system that helps keep operating temperatures low, thereby extending the lifespan of the components and ensuring reliable performance during prolonged listening sessions.

The 840W is also easy to integrate into existing systems, thanks to its smart design. The front panel incorporates an informative display and intuitive controls, making it user-friendly.

In summary, the Cambridge Audio Azur 840W is a powerhouse that delivers exceptional performance with advanced technology, making it a standout choice for those seeking high-fidelity audio amplification. With its robust build, innovative Class XD technology, and versatile connectivity options, the Azur 840W is well-equipped to elevate any audio experience.