CAMBRIDGE AUDIO 840A MANUAL PDF

We hope that you will appreciate the results and enjoy many years of listening pleasure from it. For the A we developed many new circuits and components, with many parts being designed specifically for this model. This technology creates a region of pure Class-A operation where the crossover zone would otherwise be. It should not be confused with Class AB, which gives a small area of Class A, at the cost of higher distortion as soon as signal levels moves outside it. A white paper on this technology is available on our website: www.

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Page 6: Rear Panel Connections In - Allows un-modulated commands from multi-rooms systems or other components to be received by the unit. Out - Loop out for control bus commands to another unit. Also allows the A to control some Cambridge Audio units. Multi-Room Input 1 Balanced Audio The Tape Input circuit of the A is a "monitor" type, different from the other 7 inputs. For the 7 normal inputs, the source selected for listening to will be sent out of the Tape Out for recording.

Page 8: Front Panel Controls If the combined resistance measured on the loudspeaker terminals is too low the amplifier may not switch out of Standby mode until a suitable load resistance is detected. For more information refer to the CAP5 section of this manual. Page 9 but the recorded signal can be checked using the tape input Tape Monitor. Display LCD used to control the A.

Insert the supplied AAA batteries to activate. Page Connections Co-axial Optical Co-axial N A Class XD integrated amplifier Tape connection The diagram below 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 signal in parallel. Page 12 Note: When using two pairs of speakers, use speakers with a nominal impedance of between ohms each minimum. Here you can adjust the listening settings of the amplifier to personal preference.

The menu system is easy to navigate The inputs can be named to reflect the actual source units you have, each input can be trimmed so that each sounds the same in terms of loudness when you switch between them and other options. Page 16 AV receiver connect to the fixed gain input chosen on the A. As the gain can be fixed to any value it is easy to match the level of the A to that of the other AV channels.

The sockets are colour- coded orange on the rear panels of compatible Azur models. Continue the chain to other Azur models if required. On the front panel display of the A the extra multi-room zones are indicated by a circle outline next to the input source see Fig. When listening to the same source, the circle outline and solid circle overlap see Fig. The SOA is a set of limits given by the output transistor manufacturer to ensure reliability. The A deals gracefully with brief periods of overload by controlling the drive to the output transistors.

This would only be required if the loudspeakers have very low DC resistance. Ensure the plug is fully inserted into the wall socket and is switched on. Check fuse in the mains plug or adaptor.

There is no sound Make sure the unit is not in Standby mode. Check that source component is properly connected. Page Technical Specifications This guide is designed to make installing and using this product as easy as possible. Page Limited Warranty If your dealer is not equipped to perform the repair of your Cambridge Audio product, it can be returned by your dealer to Cambridge Audio or an authorised Cambridge Audio service agent.

You will need to ship this product in either its original packaging or packaging affording an equal degree of protection. Page 26 A www.

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