REAR PANEL
1.-
24 V DC power supply terminals. In order to operate the amplifier with 24 V DC power supply, batteries,
emergency power supply system, etc. Make the connection with 2.5 mm
2
cable section to the - negative
and + positive terminals.
2.-
AC socket:
for connection of AC power supply cable.
3.-
Output for connection of low impedance 4 Ω loudspeakers and in high impedance lines 100 or 70 V.
Connect the loudspeaker line between the COM terminal and the required impedance or line in volts (V).
Note
: it is not possible to use different types of loudspeaker output at the same time.
4.-
PAGING MIC
: paging mic. input connector, RJ-45 connector. Use a generic paging microphone
adapting the original microphone connector to an RJ-45 connector. Follow the pin ratio shown on the
rear panel of the amplifier.
The volume of the microphone connected in this input is adjusted with the control MIC 1.
Note
: bear in mind that this connector always supplies 24 V DC phantom power supply.
5.-
2-TONE CHIME
: switch which allows 2 chimes to be activated when it is connected to the paging
microphone in the PAGING MIC input.
6.-
PHANTOM +48 V
: switch which allows the phantom 2 and 3-pin power supply of 48 V to be
activated/deactivated for each of the microphone inputs 1 to 4. The LED indicator lights up in red when
the phantom power supply is activated.
7.-
MIC 1-4:
microphone inputs with XLR connector, accepting signals from balanced and unbalanced
dynamic microphones and balanced electret condenser microphones that require 48 V phantom.
8.-
GAIN
: gain controls for the microphones connected to the inputs MIC 1-4.
9.-
MIC PRIORITY:
microswitches which allow the priority in microphones 1 to 4 to be activated over the
rest of the inputs.
10.-
CHIME VOL
: chime volume control 4-TONE CHIME.
11.-
ALARM VOL
: alarm volume control DIN ALARM.
12.-
MASTER OUT
: balanced line output, XLR connector. Signal output to connect to another amplifier.
EN
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MPA-124U_MANUAL_(EN)_20170306_Maquetación 1 6/3/17 16:51 Página 5
