Bedienungsanleitung Cambridge Audio Azur 651W (Seite 5 von 12) (Englisch)

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Rear panel connections

1. Power On/Off

Switches the unit on and off. If the 651W is not going to be used for long

periods of time it should be turned off using this switch.

2. Mains Voltage Selector Switch (CU version only)

Switches the 651W mains voltage between 100V and 115V.

Note: For use by Cambridge Audio service personnel only!

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. Your unit is now

ready for use.

4. Loudspeaker terminals

Two sets of loudspeaker terminals are available, a main loudspeaker

terminals (top row) and secondary 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 either speaker terminals, affords you an easy and inexpensive

way to create a simple multi-room system.

5. Control Bus

In - Allows un-modulated commands from multi-room systems or other

components to be received by the unit.

Out - Loop out for Control Bus commands to another unit.

The 651W can also be switched between On and Standby mode by

connecting the Control Bus output of an 851E pre-amplier to the

Control Bus input of the 651W. Refer to the ‘Power syncing’ section of

this manual for more information.

6. IR (Infra-Red) Emitter In

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.

7. Trigger In, Out/Thru

For Custom Install use or with preamps and with trigger outputs, the

651W 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 651W 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 ampliers or

other equipment if desired. Refer to the ‘Power syncing’ section of this

manual for more information.

8. Input Type switch

Use to select a balanced or unbalanced connection type for the input.

Input types

The 651W features either unbalanced (phono/RCA) or balanced (XLR)

input 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).

Use the Input Type switch 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.

Warning! DO NOT switch between input types when the 651W is on.

9. Balanced Audio Input

For connection to the balanced XLR outputs of suitable pre-ampliers

that have this kind of output (such as our own 851E model). The pre-

amplier 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 ne).

Nearly all modern pre-ampliers fulll this requirement.

10. Unbalanced Audio Input

For connection to the normal (single ended) RCA/Phono outputs of a

suitable pre-amplier (such as our own 851E model). The pre-amplier

used should be capable of providing at least 1V rms of output (more is

ne). Nearly all modern pre-ampliers full this requirement.

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