Specifications

4.2 Output Connections

The MX5 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’ (see above), connect

the ‘cold’ pin and (Pin 1) together. The signal ground switch should be

placed in the Lift position at the MX5 outputs which permit 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.

For balanced operation, the screen should be connected to ground at the

amplifier end. To eliminate ground current loops, it can be lifted at the MX5

output, provided normal safety requirements have been met (ie the mains

earths are correctly connected-See Fig 3).

Martin Audio – MX5 System Controller

ENGLISH

Fig 3.

Chassis

Grounded

Shield

Signal

Grounded

Shield

MX5 Output

Amplifier Input

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