IMG STAGELINE MPA-202 Mode D'emploi page 7

can be switched on. Servo-balanced XLR jacks
and unbalanced RCA jacks are available as
outputs. A 15 Hz infrasound filter and an ad-
justable high pass filter (15 Hz to 240 Hz) sup-
press interfering frequency parts.
4 Connecting the Unit
Switch off the MPA-202 and the units to be
connected before making or changing any
connections.
Hints
1. The XLR input and output connections
should be balanced; this will suppress
interferences (caused by long connection
cables) in a better way than unbalanced
connections do.
2. For unbalanced connections, bridge con-
tacts 1 (ground) and 3 (negative signal)
of the XLR plugs. The servo-balanced
circuit will automatically make up for
the 6 dB level loss that occurs with unbal-
anced connections.
Connection
1) Connect the microphones to the inputs
INPUT (10). The XLR jacks have a latch. To
pull out a plug, press the PUSH lever.
2) Connect the line inputs of the subsequent
unit (e. g. amplifier, mixer) to the XLR out-
puts (12) and / or the RCA inputs (11).
3) Finally connect the low-voltage plug of
the power supply unit provided to the jack
"24 V ⎓ " (7) and the power supply unit to a
socket (230 V/ 50 Hz).
5 Operation
1) When using phantom-powered micro-
phones, the phantom power (+12 V) must
be switched on. For this purpose, press the
button PHANTOM (9).
Attention!
If the phantom power is switched on, no
microphones with unbalanced output
must be connected; they may be dam-
aged.
2) Do not switch on the unit with the POWER
switch (8) before activating the phantom
power. The green LED ON (6) lights up.
Then switch on the subsequent unit.
3) Use the rotary switch GAIN (5) to adapt the
amplification of the microphone signal to
the required input level of the subsequent
unit. For fine adjustment, use the control
FINE TUNE (2). The peak value LED indica-
tor PK (4) must shortly light up with music
peaks. If it lights up for a longer time, turn
back the control FINE TUNE or the switch
GAIN.
4) To suppress low-frequency interference sig-
nals adjust, with the control LOW CUT (1),
the frequency at which the transmission
range is to start.
5) If the phase of the microphone signal must
be turned by 180° (inverted), press the
button INVERT (3). If in doubt, alternately
press and release the button to determine
the best switch position; this will be, for ex-
ample, when the bass reproduction in the
master signal of the signal sources (micro-
phones) is best.
6) After operation, switch off the MPA-202
with the POWER button. If it is not used for
a long er time, also disconnect the power
supply unit from the socket. Otherwise
there will be an unnecessary power con-
sumption.
6 Specifications
Frequency range:. . . . 20 Hz (±1 dB) to
20 kHz (±0.5 dB)
Inputs
sensitivity at
1 V output voltage . 0.16 – 150 mV adjustable
impedance: . . . . . . 4.4 kΩ with bal. connection,
2.2 kΩ with unbal. connection
phantom power:. . . +12 V
Outputs
XLR, servobal.: . . . . 1 V / 14 V max., 100 Ω
RCA, unbalanced:. . 1 V / 7 V max., 600 Ω
Amplification: . . . . . . 15 – 75 dB
Channel seperation: . > 80 dB
S / N ratio:. . . . . . . . . . > 68 dB, unweighted
THD: . . . . . . . . . . . . . < 0.01 %
High pass filter
(Low Cut): . . . . . . . . . 15 – 240 Hz, 6 dB / oct.
Infrasound filter: . . . . 15 Hz, 18 dB / oct.
Power supply: . . . . . . via power supply unit provided,
connected to 230 V / 50 Hz
Dimensions, weight: . 116 × 55 × 135 mm, 980 g
Subject to technical modifications.
All rights reserved by MONACOR
GmbH & Co. KG. No part of this instruction manual
may be reproduced in any form or by any means for
any commercial use.
INTERNATIONAL
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