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MMX-4
Order number 24.1070
ELECTRONICS FOR SPECIALISTS
4-Channel Microphone Mixer
These instructions are intended for users without any
specific technical knowledge. Please read the instruc-
tions carefully prior to operation and keep them for
later reference.
1 Applications
The MMX-4 is a miniature mixer for four mono micro-
phones whose signals are mixed and amplified to line level.
2 Important Notes
The unit corresponds to all relevant directives of the EU and
is therefore marked with
•
The unit is suitable for indoor use only. Protect it against
dripping water and splash water, high air humidity and
heat (admissible ambient temperature range 0 – 40 °C).
•
For cleaning only use a dry, soft cloth, never use chem-
icals or water.
•
No guarantee claims for the unit and no liability for
any resulting personal damage or material damage will
be accepted if the unit is used for other purposes than
originally intended, if it is not correctly operated or not
repaired in an expert way.
If the unit is to be put out of operation defini-
tively, take it to a local recycling plant for a dis-
posal which is not harmful to the environment.
3 Power Supply
The power supply can be made with a 9 V battery or a
9 V power supply unit (e. g. PSS-600E from MONACOR).
1) For battery operation, unscrew the battery compart-
ment at the lower side of the unit and insert a battery
(not supplied).
2) For operation with a power supply unit connect the
power supply unit to the jack 9 V⎓ (3). If a battery has
been inserted, it is switched off. A low voltage plug
5.5 / 2.1 mm (outside / inside diameter) is required. Always
1
1
2
INPUT
3
MMX-4
MIC 1
MIC 2
MIC 3
0
10
0
10
0
4
ELECTRONICS FOR SPECIALISTS
.
2
4
OUTPUT
MASTER
MIC 4
ON
PK
10
0
10
OFF
5
MONACOR INTERNATIONAL GmbH & Co. KG • Zum Falsch 36 • 28307 Bremen • Germany
Copyright
by MONACOR INTERNATIONAL. All rights reserved.
©
ELECTRONICS FOR SPECIALISTS
observe the correct polarity: The positive pole must be
at the centre contact!
Attention! Remove the battery if the unit is not in use for
a longer time or if it is only operated with a power supply
unit. Thus, the unit will not be damaged in case the battery
should leak.
Never put batteries in the household waste. To
protect the environment, always take them to a
special waste disposal, e. g. collection container
at your retailer.
4 Operation
1) Connect the microphones to the jacks INPUT 1 to 4 (1).
2) Connect the jack OUTPUT (2) to a line input of the fol-
lowing unit (amplifier, mixer, recorder).
3) Set the controls MIC 1 – 4 (4) of the channels to which
no unit has been connected to "0". Set the other con-
trols to mid-position first.
4) To switch on the unit, turn the control MASTER (5)
clockwise. The LED ON PK (6) shortly lights up at
maximum brightness first and then keeps lighting at
lower brightness.
5) Adjust the output level with the control MASTER so that
the following unit is adjusted to an optimum level.
6) Mix the microphone signals with the controls MIC 1 – 4
or fade them in and out. The LED ON PK serves as a
level indicator.
5 Specifications
Frequency range: � � � � � � � � � � � � � � � 20 – 20 000 Hz
Input sensitivity: � � � � � � � � � � � � � � � � 5 mV
Input impedance: � � � � � � � � � � � � � � � 1 kΩ
Output voltage: � � � � � � � � � � � � � � � � 100 mV
Output impedance:� � � � � � � � � � � � � � 2 kΩ
S /N ratio: � � � � � � � � � � � � � � � � � � � � � 55 dB
THD: � � � � � � � � � � � � � � � � � � � � � � � � < 0�5 %
Power supply:� � � � � � � � � � � � � � � � � � 9 V⎓ (battery or PSU)
3
Dimensions, weight: � � � � � � � � � � � � � 148 × 85 × 55 mm, 390 g
9V
Subject to technical modifications.
Connections and Operating Elements
1 Microphone inputs
2 Line level output
3 Connection for power supply
4 Channel signal controls
10
5 On / off switch and output level control
6
6 Power LED and level indicator
ELECTRONICS FOR SPECIALISTS
A-0994.99.04.02.2016
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