AMC MMA 120X, User Manual, Page: 7 / 16

MAIN POWER CONNECTOR
Power connector is designed for main powers connecting to amplifier. This connector is combined with fuse
holder.
AC FUSE HOLDER
Please use 2 A, 250 V fuse for amplifier MMA 120X, 4A, 250V fuse for amplifier MMA 240X, 6.3A, 250V fuse
for amplifier MMA 360X and 8A, 250V fuse for amplifier MMA 480X.
100V AND 4Ω AMPLIFIERS OUTPUT
Use this connector to connect amplifier to the loudspeakers. There are two types of output: 100V and 4Ω.
100V output is designed for loudspeakers with built-in impedance matching transformer. 4Ω output
suitable for speaker without 100V matching transformer. Please note: MMA480X amplifier have 100V
output only!
CONNECTOR FOR PAGE STATION 5X MICROPHONE
This connector is suitable for page station 5X microphone. Don’t connect any other devices to this
connector, other vice amplifier and connected device will be damaged.
ANTENNA CONNECTORS
If amplifier is supplied without the music source module, this connector is not installed. Antenna connector is
part of m usic source module, so connector is included to module package.
AMP IN AND PRE-AMP OUT CONNECTORS
PREAMPLIFIER OUTPUT - line level output directly from unit preamplifier. AMPLIFIER INPUT - line level input
directly to device power amplifier. Preamplifier output and amplifier input are designed to insert signal
processor such as equalizer or limiter. Please note that AMP IN and PRE-AMP are designed before the master
potentiometer, so master doesn’t affect audio level in these connectors. Please check block diagram to find
location where connectors are inserted to amplifiers layout.
LINK IN AND LINK OUT CONNECTORS
LINK OUTPUT - line level output linked from unit preamplifier. LINK INPUT - line level input linked to device
power amplifier. Please note that LINK IN and LINK OUT are designed before the equalizer and master
potentiometer, so equalizer and master don’t affect audio in these connectors. LINK IN and LINK OUT
connectors are suitable to link audio signal from MMA to another amplifier or to audio recorded etc. Please
check block diagram to find location where connectors are inserted to amplifiers layout.
MUSIC ON HOLD
Music on hold audio output produce audio signal from installed music source module or input sixth. The
source and audio level can by selected by using switch and potentiometer located on rear panel.
CHIME/SIREN LEVEL CONTROL
Chime and siren audio level can be adjusted by using Chime/Siren level control.
TELE PAGING
This is balanced input for dynamic remote microphone. Balanced Phoenix connector.
CHIME CONNECTOR
This connector designed for external chime activation button. In order to activate chime, connector’s contacts
should by connected with each other for a short time.