Output Connections - Martin Audio WX3A User Manual

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CONTENTS
Chassis
Grounded
Shield
Signal
Grounded
Shield
4.2

Output Connections

The WX3A outputs are electronically balanced auto compensating via male
XLR type connectors. Pin 1 is the (ground) connection and the signal
appears between Pins 2 and 3.
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.
This is to keep the screen a true screen so that no signal return currents
flow through it which can induce signals in adjacent cables.
For unbalanced use, having decided which pin is 'hot', connect the 'cold'
pin and (Pin 1) together. The internal signal ground lead should be placed
in the earth off position at the WX3A outputs which allows the amplifier to
be locally grounded (as required for safety reasons) without causing a hum
loop. If the signal is merely taken between either Pin 2 or 3 and Pin 1, a
level loss and signal degradation will occur.
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PRINT
Source
1 2
3
Source
1 2
3
Martin Audio – WX3A System Controller
WX3A
Input
2
3
WX3A
Input
2 1
3
Fig. 2
5
GUIDES
Ground
1
Lift
Resistor
Ground
Lift
Resistor