Cloud CXM User's Guide download pdf (Page 20)

CXM Technical

MANUAL

General

6.01 Interfacing a tape deck for recording purposes.

The M2 master module is fitted with a total of two stereo pairs of record output sockets, all using

RCA type phono sockets. One pair carry the main output signal: this output is controlled by the

master faders and the system must be operated normally with master faders open sufficiently to

give a satisfactory recording level. The other pair of record outputs carry music only, pre-master

fader signals. These outputs are not controlled by the master faders and may be used where no

mic signals are required to be recorded.

The M2 modules have additional XLR outputs carrying music only, pre-master fader signals.

These outputs are not controlled by the master faders and may be used where no mic signals

are required.

If Output 2 is not being used for an additional output zone then it’s balanced, pre-master fade

signal offers flexibility as the music and mic signal levels are independently adjustable by means

of the rotary front panel controls.

If a CZ1 zone module is fitted to the CXM mixer, it is possible to use the auxiliary outputs on

Zone 2 or Zone 3 for recording purposes. Possibly the best option would be to use Zone 2 in the

pre-fade mode. The mic and music faders would then control the recording level independently of

the master faders.

Finally, if you are really stuck, the aux send facility could be used (in the post-fade mode) but to

keep noise levels to a minimum, only open the channels you intend to use.

6.02 Unbalanced Mode

If it is required to have stereo unbalanced outputs from either the Main or Zone groups, as

opposed to the normal balanced mode, pin 2 should be used for an in phase signal and pin 1 as

ground, note this will give a 6dB reduction in output level. Pin 3 may be used as an output if an

anti-phase signal is required instead. Do not connect either output pin to ground. If any input XLR

connector is also unbalanced, the same phase should be used as hot.

6.03 Earthing

The 0V rail on the CXM mixer is connected to the mains earth via the power supply lead and the

mixer power supply must always be earthed. A green earth terminal is provided on the master

rear panel to earth turntables, etc. If any mains powered input apparatus has it’s own earth

connection to a different point mains point, then earth loop hums might be caused. This 'hum'

can be remedied in several ways. One method is to operate all possible circuitry in the balanced

mode and connect the signal cable screen at the receiving end only. Alternatively, try to re-route

the mains supply of the apparatus to the same point that the CXM power supply is connected to.

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Cloud CXM User's Guide Page 20