Safety Notes; Applications - IMG STAGELINE MPA-202 Mode D'emploi

Microphone Preamplifier
These instructions are intended for users
without any specific technical knowledge.
Please read these instructions carefully prior
to operation and keep them for later refer-
ence. All operating elements and connec-
tions de scribed can be found on the fold-out
page 3.
In the following text, channel 1 is described.
The operation of channel 2 is completely
identical.
1 Overview
1 Control LOW CUT for the high pass:
The signal parts below the adjusted fre-
quency are suppressed
2 Control FINE TUNE for the fine adjustment
of the amplification (±5 dB)
3 Button to invert the microphone signal;
with the button pressed, the signal will be
inverted
4 Peak value indicator PK: lights up when
the channel is perfectly adjusted
The LED must shortly light up with music
peaks. If it lights up for a longer time,
turn back the control FINE TUNE (2) or the
switch GAIN (5).
5 Step switch GAIN for coarse adjustment of
the amplification (20 – 70 dB in 5 dB steps)
6 Power indicator ON
7 Connection jack "24 V ⎓ " for the power
supply unit provided
8 POWER switch
9 Button PHANTOM for switching on the
phantom power (+12 V); with the button
pressed, the phantom power is switched
on
Please observe the note "Attention" in
chapter 5.
10 Microphone input (XLR, servo-balanced)
11 Line output (RCA, unbalanced)
12 Line output (XLR, servo-balanced)
6

2 Safety Notes

The units (microphone preamplifier and
power supply unit) correspond to all relevant
directives of the EU and are therefore marked
with .
WARNING The power supply unit uses dan-
gerous mains voltage. Leave ser-
vicing to skilled personnel only.
Inexpert handling may result in
electric shock.
•
The units are suitable for indoor use only.
Pro tect them against dripping water and
splash water, high air humidity and heat
(admissible ambient temperature range
0 – 40 °C).
•
Even when the amplifier is switched off,
the power supply unit connected to a mains
socket has a low current consumption.
•
Do not set the amplifier into operation and
immediately disconnect the power supply
unit from the mains socket if
1. there is visible damage to the power sup-
ply unit or the amplifier,
2. a defect might have occurred after a
drop or similar accident,
3. malfunctions occur.
The units must in any case be repaired by
skilled personnel.
•
For cleaning only use a dry, soft cloth; never
use chemicals or water.
•
No guarantee claims for the units and no
liability for any resulting personal dam-
age or material damage will be accepted
if they are used for other purposes than
originally intended, if they are not correctly
connected or operated, or if they are not
re paired in an expert way.
If the units are to be put out of
operation definitely, dispose of
the units in accordance with local
regulations.

3 Applications

The MPA-202 is a 2-channel microphone pre-
amplifier in low-noise semiconductor tech-
nology to be used on stage and in the sound
recording studio as well as for home record-
ing and multimedia applications.
The microphone inputs are designed as
servo-balanced XLR jacks. For phantom-pow-
ered microphones, the 12 V phantom power