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5
EMX640—Owner’s Manual
POWER AMP section
This section allows you to select the signals that
will be output from the built-in two-channel
power amplifier, and to select the BRIDGE mode.
I
LIMITER indicator
This indicator lights up when the level of the sig-
nal output from the power amp section reaches
the maximum and the limiter is activated. Adjust
appropriate control so that the indicator lights up
for only a short while when the signal reaches the
maximum level.
J
Power amp select switch
Select one of the following three settings to spec-
ify the signals that will be output from power
amp 1/2.
• MAIN-MONITOR
With this setting, the MAIN and MONITOR sec-
tions can be used independently. The MAIN bus
signal will be output from the POWER AMP 1 A/
B jacks, and the MONITOR bus signal will be
output from the POWER AMP 2 A/B jacks.
MAIN-MAIN
With this setting, the two power amp channels
can be used independently. The MAIN bus signal
will be output from the POWER AMP 1 A/B jacks
and from the POWER AMP 2 A/B jacks.
• MAIN BRIDGE
With this setting, the two power amp channels (A
and B) will be bridge connected. Only the MAIN
bus signal will be output from the BRIDGE jack,
though.
POWER indicator & PHANTOM
switch
K
POWER indicator
This indicator will light when the power of the
EMX640 is turned on.
L
PHANTOM +48 V switch
This switch turns the phantom power supply on/
off for the Lo-Z input jacks of channels 1~4 and
MIC input jacks of channels 5~6.
Note:
The indicator lights up or flashes for a
longer duration if the power amp section is sig-
nificantly overloaded, which could result in
malfunction. Avoid such a situation.
POWER AMP
1
2
LIMITER
MAIN
BRIDGE
MAIN
MONITOR
MAIN
MAIN
I
J
POWER
ON
OFF
PHANTOM +48V
K
L
5


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