User manual CAMBRIDGE AUDIO AZUR 840W

[. . . ] azur 840W ENGLISH Class XD power amplifier User's manual 2 Important safety instructions For your own safety please read the following important safety instructions carefully before attempting to connect this unit to the mains power supply. They will also enable you to get the best performance from and prolong the life of the unit: 1. Install in accordance with the manufacturer's instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. [. . . ] The balanced connection is the higher quality option and can reject noise and interference in the cable when used with other equipment that supports this function. An XLR connector is wired Pin 1 - Ground; Pin 2 - Hot (in-phase); Pin 3 - Cold (phase-inverted). Use the Left and Right Input Type switch (Item 4) to select the connection type you wish to use. When using either the balanced or unbalanced input, make sure that no cables or equipment are connected to the unused input, as this may degrade operation. The unused input does not need to be terminated and this should not be done. 2 Trigger In, Out/Thru For Custom Install use, the 840W can be turned on and off (i. e. brought in and out of Standby mode) by the presence of 5-12V DC at the Trigger input. A trigger input will also produce an internally generated 12V DC trigger output at the Output/Thru connection. Turning the 840W on from the front panel also produces a 12V DC trigger output at the Output/Thru connection. This can be used to turn on/Standby other connected power amplifiers or other equipment if desired. Refer to the `Power syncing' section of this manual for more information. 9 IR (Infra-Red) Emitter In Balanced Audio Allows modulated IR commands from multi-room systems or IR repeater systems to be received by the unit. Commands received here are not looped out of the Control Bus. Refer to the `Custom installation' section for more information. 10 For connection to the balanced XLR outputs of suitable pre-amplifiers that have this kind of output (such as our own 840E model). The preamplifier used should be capable of providing at least 1V rms of output per phase (i. e. at both of + and ­ terminals of the XLR, more is also fine). Nearly all modern pre-amplifiers fulfill this requirement. 3 AC power socket Once you have completed all connections to the unit, plug the AC power cable into an appropriate mains socket then switch on. 11 Unbalanced Audio For connection to the normal (single ended) RCA/Phono outputs of a suitable pre-amplifier (such as our own 840E model). The pre-amplifier used should be capable of providing at least 1V rms of output (more is fine). Nearly all modern pre-amplifiers fulfil this requirement. [. . . ] 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. The remote first generates a standby (toggle) command. [. . . ]