Connections
INPUTS: Connect microphones or balanced line-level sources to mixer-amplifier balanced input connectors.
Set gain to desired level. Connect unbalanced line-level signals to RCA input connectors.
OUTPUT: Maintain proper polarity on output connectors.
Each output channel may be connected via Phoenix connectors.
Use terminals marked
(GND) and
for a 4
Ω
loudspeaker load, or use terminals marked
to
and COM for constant - voltage loudspeaker loads.
Connect the COM terminal to speaker negative (-) lead; connect one of the other terminals to
speaker positive (+) lead.
Impedance and output voltages ratios
MMA 60
4Ω / 15.5V
10Ω / 25V
83Ω / 70V
165Ω / 100V
MMA 120
4Ω / 22V
5.2Ω / 25V
42Ω / 70V
83Ω / 100V
MMA 240
4Ω / 31V
2.6Ω / 25V
21Ω / 70V
42Ω / 100V
NOTE : The total speaker system impedances indicated in the table represent.
Different voltages and impedance could be selected to Hi-Z outputs by changing wires connected to T10, T11,
T12 and T13 terminals.
By default unit is set to provide 100V lines. Different output line modes could be set by plugging appropriate
color wires to particular terminals. Possible output modes are listed in a wire to terminal table.
Mode\Terminals
T10
T11
T12
T13
100V
RED wire
BLUE wire
GREEN wire
BLACK wire
70V
GREEN wire
RED wire
BLUE wire
BLACK wire
25V
BLUE wire
GREEN Wire
RED wire
BLACK wire