Cloud CX335 Specifications download pdf (Page 9)

Page 8 CX335 Technical Manual

Installation

3.01 Mounting

The CX335 is designed for standard 19" rack mounting and occupies 1U of rack space.

Avoid mounting the unit directly above power amplifiers or power supplies that radiate

significant amounts of heat and strong magnetic fields. Fibre or plastic washers may be

used to prevent the front panel becoming marked by the mounting bolts.

3.02 Audio Connections

Both the input and output 3pin XLR connectors may be used either balanced or

unbalanced, the wiring convention being: pin 2 hot, pin 3 cold and pin 1 ground. For use

with unbalanced systems, unbalancing can be achieved by shorting pin 3 of the XLR

connectors to ground (pin 1) at both inputs and outputs. In both modes of operation the

system input level should be referenced to 0dBu.

The CX335 is designed as a stereo compressor and always expects to be used with

matching left and right stereo signals. Unexpected and unusable results will occur if two

independent mono signals are fed through the unit. Furthermore, if the audio system

being processed is configured for mono operation you will have to connect an input signal

to both channels to make any sense of the front panel meter calibration and control

graticules, although only one output socket need be used.

If earth loop problems are encountered, do not disconnect the mains earth but instead,

operate the system in the balanced mode with the cable screen only connected at the

receiving end of the cables. If the system can only be operated in the unbalanced mode,

then we suggest that all items of equipment be supplied from power sockets in close

proximity to each other, and if equipment is fitted with earth switches or links/jumpers,

then these should be switched off or the links removed.

Under no circumstances must any earth connections be removed.

3.03 Power Connection

The unit will have been configured to operate on a power input of 220 to 240 Volts AC at

40 to 60Hz. If for some reason the unit is to be used at a mains input operating voltage

which is different to that as supplied, the following procedure must be carried out. (see

following diagram)

1: Disconnect the unit from the mains.

2: Using a number 2 size pozidrive screwdriver, remove the six self-tapping screws

retaining the top panel of the unit.

3: Using a number 1 size pozidrive screwdriver, remove 4 M3 machine screws that retain

the main PCB to the bottom panel. These can be located:

3.1: Just behind the Threshold control

3.2: Directly behind the Gain Reduction display meter.

3.3: In front and to the rear of the grey encapsulated transformer block.

4: From the underside of the unit, remove the six self-tapping screws retaining the bottom

panel of the unit, using the number 2 pozidrive.

5a: If the unit is currently configured for 220-240 Volts AC, to the side of the transformer

can be found 1 zero Ohm link. This should be removed and two zero Ohm links should be

fitted to the positions marked 110-120 Volts. Go to paragraph 6.

5b: If the unit is currently configured for 110-120 Volts AC, to the side of the transformer

can be found 2 zero Ohm links. These should be removed and one zero Ohm link should

be fitted to the position marked 220-240 Volts.

6: Replace the power fuse with a correctly rated fuse for the new operating voltage.

7: Re-fit the two covers in the reverse order.

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Cloud CX335 Specifications Page 9

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