Connections; Input Connections - Martin Audio WX3A User Manual

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CONTENTS
4

CONNECTIONS

4.1

Input Connections

WX3A inputs are on female XLR type connectors and are electronically
balanced. Pin 1 is normally open circuit but may be linked to sig 0V or
chassis earth by inserting a link on the PCB (see Fig 1). The signal is
always applied between Pin 2 (hot +) and Pin 3 (cold -).
Always use 2-core + screen 'balanced' type signal leads, even for
unbalanced circuits. The screen should be regarded as separate from the
signal return, even if they are connected together at one end of the line.
For either balanced or unbalanced operation, always connect the signal
between Pins 2 and 3. The input cable shield should be derived from
equipment which is sourcing the input provided that normal safety
requirements are met (ie the mains earth is correctly connected). See Fig 2.
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Martin Audio – WX3A System Controller
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link for pin 1 chassis/earth
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link for pin 1 signal 0V
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No link for pin 1 open circuit
Fig. 1
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