User manual CAMBRIDGE AUDIO AZUR 640A

[. . . ] It is the result of our most extensive ever research and development program in over three decades of producing high quality audio products. We hope that you will appreciate the results and enjoy many years of listening pleasure. This has the effect of reducing distortion, increasing dynamics and allowing the bandwidth to be opened up to a massive 80kHz, ideal for the new 'better than CD' high bandwidth sources such as DVD-Audio and Super Audio CD. The performance of any amplifier is limited by the dynamic abilities of its power supply, and for this reason Cambridge Azur amplifiers incorporate many features, including a low flux toroidal transformer, paralleling of the reservoir capacitors and careful use of bypass capacitors, to allow the instantaneous clean delivery of charge whenever it is needed. [. . . ] please ensure that the speaker 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. Speakers A are the main speaker terminals, speakers B are the secondary switchable speaker terminals. Connect the wires from your left channel loudspeaker to the LEFT + & - terminals, and likewise the wires from the right channel loudspeaker to the RIGHT + & - terminals. in each case the red terminal is the positive output , and the black terminal is the negative input. Care should be taken to ensure no stray strands of wire are shorting speaker outputs together. These sockets can be connected to a tape deck or to the analog sockets on a MiniDisc or CD recorder. If you are connecting a turntable to your amplifier then its ground wire should be attached to this point These sockets can be connected to a tape deck or to the analog sockets on a MiniDisc or CD recorder. Connect an interconnect cable from the Tape Out sockets of this amplifier to the recorder's Line In. Please note that this unit has two tape loops which have identical outputs. These inputs are suitable for any 'line level' source equipment such as CD players, DAB or FM/AM tuners etc. Connect any 'line level' source equipment to these sockets i. Alternatively this particular input can be converted to a dedicated turntable if desired although to do this a Cambridge Audio PM01 Phono Module must be fitted. Please contact your Cambridge Audio dealer who can supply and install a phono stage to your amplifier. They should not be connected to the digital output of a CD player or any other digital device. When designing our amplifiers we have tried to include features that allow you to connect your system in various ways. The inclusion of features such as PRE-OUT and SPEAKER B connections mean that you can configure your system depending on your requirements. The following diagram shows how to connect the amplifier to a tape recorder or other source with a record and monitor connection. Please note that either of the tape loop outputs can be used (as they are both the same). Note - When using two pairs of speakers each pair should be rated at least 6 ohms (or higher). When the headphones are connected the loudspeaker relay is released switching off the output to the loudspeakers (Speakers A and B). This control gives the audio signal a more direct path to the power amplifier stage of your amplifier, bypassing the tone control circuits for the purest possible sound quality. [. . . ] Note: If the indication remains the same and multiple Loudspeakers are being used on each Loudspeaker output then please remove a pair and retry. If too many Loudspeakers are connected to any amplifier causing the Load resistance to drop too low the amplifier will overheat. If the indication remains the same with only one set of loudspeakers connected then there could possibly be a fault with one or both of the loudspeakers. The unit is not damaged although it should be left for 15 minutes to cool down before being switched out of standby. [. . . ]