User manual CAMBRIDGE AUDIO AZUR 550

[. . . ] Integrated amplifier User’s manual 2 azur 550A/650A Your music + our passion ENGLISH Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Important safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Limited warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Rear panel connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] For the five normal inputs, the source selected for listening to will also be sent out of the Rec 1/Rec 2 outputs for recording. The source currently being listened to and (optionally) recorded is then shown on the front panel by a corresponding blue LED. However, when the Tape Mon Input is selected the Tape Mon LED will also illuminate, indicating that the Tape Monitor Input is now being listened to with a different source being sent out of the Rec1/Rec2 outputs for recording. The recording source is shown by the first LED and can be changed by pressing the other source buttons. To switch Tape Monitor off, simply press the Tape Mon button again, toggling this function off. This feature is most useful when using three-head analogue cassette decks which allow the signal being recorded to be played back live off tape (via a third head) whilst it is simultaneously recorded. It is then possible, by toggling the Tape Monitor input on and off, to compare directly in real time the original and recorded signal so that adjustments to the recording parameters of the tape machine can be made. (Consult the manual of your three-head analogue cassette deck for full details. ) 8 AC power socket Once you have completed all connections to the amplifier, plug the AC power cable into an appropriate mains socket and turn the unit on. Your amplifier is now ready for use. 3 Loudspeaker terminals Two sets of loudspeaker terminals are available, A (main loudspeaker terminals, top row) and B (secondary switchable loudspeaker terminals, bottom row). Connect the wires from your left channel loudspeaker to the LEFT positive and negative terminals, and the wires from the right channel loudspeaker to the RIGHT positive and negative terminals. In each case, the red terminal is the positive output and the black terminal is the negative output. Care should be taken to ensure no stray strands of wire are shorting speaker outputs together. Please ensure that the loudspeaker terminals have been tightened adequately to provide a good electrical connection. It is possible for the sound quality to be affected if the screw terminals are loose. The use of A and B speakers affords you an easy and inexpensive way to create a simple multi-room system. Note: When using two pairs of speakers, use speakers with a nominal impedance of 8ohms. 4 Record Out 1/2 These two identical output sockets can be connected to a tape deck or to the analogue Record In sockets on a MiniDisc or CD recorder. 9 Aux, DVD, Tuner/DAB, CD, MP3 IR (Infrared) Emitter In These inputs are suitable for any 'line level' source equipment such as DVD players, DAB or FM/AM tuners, CD players, MP3 players, etc. Note: These inputs are for analogue audio signals only. They should not be connected to the digital output of a CD player or any other digital device. Allows modulated IR commands from multi-room systems or IR repeater systems to be received by the amplifier. Commands received here are not looped out of the Control Bus. Refer to the ‘Custom Installation’ section for more information. 5 Control Bus Connecting a turntable If it is desired to connect a turntable without a built-in phono stage, an external phono stage such as our 540P or 640P models should be used. Contact your Cambridge Audio dealer for more details. Note: A very few turntables have built-in phono stages, in which case it is not necessary to use a separate phono stage amplifier. [. . . ] Overvoltage/overcurrent detection Indicator – Unit has switched off during operation, protection LED constantly flashes in bursts of three. Description – CAP5 offers V/I protection by constantly monitoring the output transistors to keep them working inside their Safe Operating Area (SOA). The SOA is a set of limits given by the output transistor manufacturer to ensure reliability. V/I also protects the amplifier against short-circuits on the speaker terminals during use. [. . . ]