Custom Installation Use; Technical Specifications - Cambridge Audio Class XD Power Amplifier Azur 840W User Manual

Custom installation (C.I.) use
The 840W features a Control Bus input/output
that allow un-modulated
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
10
IR Emitter Control Bus
In In
remote control

Technical specifications

Power Output - Stereo/Mono
Out
Power Output - Bridged Mono 500W 8 Ohms
THD (unweighted)
Frequency Response
S/N ratio (ref 1W/8 Ohm)
Sensitivity
(for 200W 8 Ohms)
Input impedances
Damping factor
Trigger In
Trigger Out
Power consumption
Dimensions (H x W x D)
Weight
200W per channel 8 Ohms
350W per channel 4 Ohms
800W 4 Ohms
< 0.001% 1kHz
< 0.005% 20Hz - 20kHz
5Hz - 80kHz -1dB
> 90 dB (unweighted)
Stereo or Mono =
1.5V rms unbalanced
1.5 + 1.5V rms balanced
Bridged Mono =
0.775V rms unbalanced
0.775V + 0.775V rms balanced
Balanced input 38 kOhm
Unbalanced input 68 kOhm
> 125 at 1 kHz
5 - 12V AC or DC
12V DC @ 100mA
Maximum 2400W
Active (no signal) < 180W
Standby < 5W
148 x 430 x 365mm
(5.8 x 16.9 x 14.4")
19.1kg (42.1lbs)