Cloud CXL-4160 Installation Instructions Manual

CXL-4160 Installation Instructions v1.0 1

CXL-4160

100/70 V Transformer Module

Installation Instructions

Important Safety Notes

It should be recognised that 100 V-line or 70 V-line speaker systems have the
potential to deliver an electric shock. Install the CXL-4160 only in accordance
with these instructions.

In all cases, the external wiring and associated speakers will need to comply
with local electrical regulations for AC voltages up to 100 Vrms (141 Vpeak).

Do not expose the transformer to rain or moisture.

The transformer module must be installed in a safe manner.

Cloud Electronics Ltd. accept no responsibility for hazardous installations.

CXL-4160 Installation Instructions v1.02

INTRODUCTION

The CXL-4160 is an optional transformer module for the 46-50 Multi-Zone Mixing Amplier. It permits the 46-50 to directly drive

100 V or 70 V-line loudspeaker systems. The module itself consists of four transformers (one for each Zone output) mounted on

a PCB, and is supplied in kit form with all the necessary xings and wiring. Any or all of the 46-50’s outputs may be converted to

70/100 V-line operation as wished. Each transformer is rated at 40 W.

The CXL-4160 transformers are not of the “auto transformer” type, and hence provide a fully balanced output signal which is

isolated from the amplier.

The module is easily mounted within the 46-50’s enclosure, using pre-drilled xing holes. The outputs are then available on an

8-way parallel entry screw-terminal connector which occupies the hole (shown below) in the rear panel normally covered by a
blanking plate.

CXL-4160 Outputs

FITTING THE CXL-4160 TRANSFORMER MODULE

The module kit comprises the following items:

• CXL-4160 transformer module PCB assembly

• 8qty M3 x 6 mm xing screws (black)

• 2qty M3 x 6 mm xing screws (bright)

• 2qty M3 x 10 mm hex pillars

• 8-pin to 4 x 2-pin cable assembly, with connectors

• 2qty cable ties

TX1 - Zone 1 TX4 - Zone 4TX3 - Zone 3 TX2 - Zone 2

46-50 Rear Panel

CXL-4160 transformer module PCB assembly

CXL-4160 Installation Instructions v1.0

3

Proceed as follows:

1. Disconnect the 46-50 from the mains. If it is tted in a rack, disconnect all inputs and outputs and remove it from the rack.

Orientate the unit with the rear nearest to you. Remove the top cover; retain the eight xing screws.

2. Remove the blanking plate from the 100V/70V LINE OUTPUTS connector location on the rear panel; retain the plate and
screws, nuts and washers.

3. Identify the eight empty M3 holes on the right-hand side of the 46-50’s enclosure (as viewed from the rear). The CXL-4160

module is xed using these holes and the eight hex spacers tted to the rear of the PCB. Align the spacers with the holes, and
x with the eight black M3 screws supplied. The output connector should protrude neatly through the punch-out vacated in

Step 2.

4. Fit the supplied cable assembly: the 8-pin header on the CXL-4160 PCB is connected to the four 2-pin headers on the 46-50
main PCB, located immediately behind the 100V/70V OUTPUTS connector location - see below. Note that the wire pairs
are colour coded for clarity:

ZONE PAIR COLOUR

ZONE 1

Mauve

ZONE 2

Grey

ZONE 3

Blue

ZONE 4

Black

Note that any or all of the four channels may be converted as required.

MAIN PCB

CON 8

Connectors for CXL4160 transformer

assy.

REAR PANEL

ZONE 1

ZONE 2

ZONE 3

ZONE 4

MAINS INPUT SUB-BOARD

IMPORTANT: The CXL-4160 is preset at the factory for either 100 V-line or 70 V-line
operation, according to territory. The relevant voltage is clearly indicated on the label on the
outside of the box.

If the alternative operating voltage is needed, refer rst to the manual section “Changing the

CXL-4160 between and 100 V-line and 70 V-line operation”.