Cambridge Audio Class XD Power Amplifier Azur 840W User Manual

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Cambridge Audio Class XD Power Amplifier Azur 840W User Manual Manual pdf 10 page image

10The 840W features a Control Bus input/outputthat allow un-modulated remote controlcommands (positive logic, TTL level) to be receivedelectrically by the unit and looped to another unitif desired. These control commands are typicallygenerated by custom installation (multi-room) systems or remote IRreceiver systems. The Control Bus sockets are colour-coded orange.An IR Emitter Input is also provided that allows modulated IR remotecontrol commands to be received electrically by the unit. Commands onthis input operate the unit only and are not looped out demodulated onthe Control Bus Output.The unit responds to ‘direct’ IR/Control codes as well as toggle codes forsome features to simplify programming custom installation systems.Special direct On/Off and Mute commands can be accessed from the840E pre-amplifier remote control for teaching into C.I. systems asfollows:1. Press and hold the Standby/On button. The remote first generates astandby (toggle) command. Keep the button held down, after 12seconds an amplifier “On” command will be generated. If the buttonis 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 helddown 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 Audiowebsite:www.cambridge-audio.comCustom installation (C.I.) useIR EmitterIn In OutControl Bus Power Output - Stereo/Mono 200W per channel 8 Ohms350W per channel 4 OhmsPower Output - Bridged Mono 500W 8 Ohms800W 4 OhmsTHD (unweighted) < 0.001% 1kHz< 0.005% 20Hz - 20kHzFrequency Response 5Hz - 80kHz -1dBS/N ratio (ref 1W/8 Ohm) > 90 dB (unweighted)Sensitivity Stereo or Mono =(for 200W 8 Ohms) 1.5V rms unbalanced1.5 + 1.5V rms balancedBridged Mono =0.775V rms unbalanced0.775V + 0.775V rms balancedInput impedances Balanced input 38 kOhmUnbalanced input 68 kOhmDamping factor > 125 at 1 kHzTrigger In 5 - 12V AC or DCTrigger Out 12V DC @ 100mAPower consumption Maximum 2400WActive (no signal) < 180WStandby < 5WDimensions (H x W x D) 148 x 430 x 365mm(5.8 x 16.9 x 14.4”)Weight 19.1kg (42.1lbs)Technical specifications

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