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

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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