Outputs - MC2 Audio E4-75 Owner's Manual

The amplifier is designed to operate with fully balanced equipment and ground loops or loss of
performance may be experienced if connected to unbalanced sources. If it is unavoidable however,
the following wiring should be used. The cable should still be twin core plus screen.
Pin 1 - Screen - connected to the chassis of the unbalanced equipment - or left disconnected at
the unbalanced end.
Pin 2 - +ve signal
Pin 3 - -ve signal
Note: This amplifier is wired to the latest industry recommendations. PIN1 is connected directly
to the chassis/mains earth. If ground loops (mains hum) are encountered remove the
screen connection from the other end of the cable and leave it open circuit. If problems
persist, consult your dealer/supplier. DO NOT TAMPER WITH OR ALTER ANY
GROUND (EARTH) CONNECTIONS INSIDE THE AMPLIFIER.
For BRIDGED OPERATION use channels A & B (or C & D). Inputs should be connected to channel
A (or C). Pressing the A/B link switch (or C/D link switch) on the rear panel connects B amplifier to
the A input (or the D amplifier to the C input).
Input Link Switches.
The three input link switches on the rear panel link the inputs of the channels to the one higher up
the hierarchy ladder. So the following combinations can be achieved.
A & B (input on A)
A & B & C (input on A)
A & B & C & D (input on A)
This switching, together with internal crossover cards (optional extras) provides a wide variety of
input connection options.

OUTPUTS

The speaker outputs are via Neutrik Speakon connectors: 2-pole (NL2FC) or 4-pole (NL4FC)
connectors can be used. Terminations (all connectors) are as follows:-
Pin +1 = +ve signal output
Pin -1 = -ve signal output
For ease of installing bi-amped or bridged speakers, output connector A also carries output B and
output connector C also carries output D. The terminations are as follows:
Output connector A
Output connector C
For bi-amped operation connect as above.
For bridged operation connect as follows:
Channels A & B +ve = channel B +ve (pin +1 on connector B or +2 on connector A)
-ve = channel A –ve (pin -1 on connector A)
B & C (input on B)
B & C & D (input on B)
Pin +1 = +ve channel A
Pin +2 = +ve channel B
Pin +1 = +ve channel C
Pin +2 = +ve channel D
9
C & D (input on C)
Pin -1 = -ve channel A
Pin -2 = -ve channel B
Pin -1 = -ve channel C
Pin -2 = -ve channel D