Cambridge Audio 840A Manuale Utente

840A Class XD integrated amplifier

Azur Class XD integrated amplifier 7

RS232C

The RS232C port allows external serial control of the 840A for custom

install use. A full command set is available on the Cambridge Audio

website at www.cambridge-aaudio.com. This port can also be used by

Cambridge Audio service personnel for software updates.

A-B

BUS™ Ready/Incognito Ready™ multi-rroom outputs

PSU - Connect an Incognito PS10 to supply power to the connected

multi-room keypads/speakers.

Keypad 1/2 - Connect one or two Incognito A-BUS KP10 keypads (or

other A-BUS compatible keypads) using CAT5/5e cable. Incognito AS10

Active Ceiling Speakers can also be connected here.

IR - Four IR outputs for remote control of source equipment.

Please refer to the ‘Multi-Room’ section of this manual for more

information on connections and set-ups.

Input 1 Balanced Audio

Input 1 features either unbalanced (phono/RCA) or balanced (XLR)

connections. Either type may be used but not both at the same time. 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).

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 require to be terminated

and this should not be done.

Preamp Out

Connect these sockets to the inputs on an external power amplifier(s) or

active subwoofers etc.

Tape In/Out

Connect to a tape deck or to the analog output sockets on a MiniDisc,

portable digital music player or CD recorder using an interconnect cable

from the recorder's Line Out sockets to the amplifier's Tape In sockets.

The Tape Input circuit of the 840A 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. The source currently

being listened to and (optionally) recorded is then shown on the front

panel display.

However, when the Tape Input is selected a solid circle will appear

beside TAPE MON indicating that the Tape Input is now being listened to

with a different source being sent out of the Tape Out for recording. The

recording source is also shown by a solid circle by the selected input and

can be changed by pressing the other source buttons. To switch Tape

Monitor off, simply press the Tape Mon input select button again,

toggling this function off.

This feature is most useful when using 3-head analog cassette decks

which allow the signal being recorded to be played back live off tape (via

a 3rd 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 3-head analog cassette deck for full details).

Inputs 1-7

These inputs are suitable for any 'line level' source equipment such as

CD players, DAB or FM/AM tuners etc.

Note: These inputs are for analog audio signals only. They should not be

connected to the digital output of a CD player or any other digital device.