Please unfold page 3. Then you can always
see the operating elements and connecti-
ons described.
In the following text channel 1 is described. The
operation of channel 2 is completely identical.
1 Operating Elements and Connections
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 in-
verted
4 Peak value indication PK:
lights up if the channel is driven in an opti-
mum way
The LED must shortly light up with music
pieces of highest volume. 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 indication ON
7 Connection jack “15 V~” for the supplied
plug-in transformer for the power supply
8 POWER switch
9 Button PHANTOM for switching on the
phantom power (+12 V)
10 Microphone input (XLR, servobalanced)
11 Line output (phono, unbalanced)
12 Line output (XLR, servobalanced)
2 Important Notes on the Safety
The units (microphone preamplifier and plug-in
transformer) correspond to the directive 89/336/
EEC for electromagnetic compatibility. The plug-
in transformer additionally corresponds to the
low voltage directive 73/23/EEC.
It is essential to observe the following items:
●
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 if the amplifier is switched off, the plug-
in transformer connected to a mains socket
has a low current consumption.
●
Do not set the amplifier into operation, or im-
mediately disconnect the plug-in transformer
from the mains socket if
1. there is visible damage to the plug-in
transformer 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, by no
means chemicals or water.
●
No guarantee claims for the amplifier or the
plug-in transformer and no liability for any re-
sulting personal damage or material damage
will be accepted if they are used for other pur-
poses than originally intended, if they are not
correctly connected, operated, or not re-
paired in an expert way.
3 Applications
The MPA-202 is a 2-channel microphone pre-
amplifier in low noise semiconductor technique
to be used on stage and in the sound recording
studio as well as for home recording and multi-
media applications.
The microphone inputs are designed as ser-
vobalanced XLR jacks. For phantom-powered
microphones the 12 V phantom power can be
switched on. XLR jacks of servobalanced de-
If the units are to be put out of op-
eration definitively, take them to a
local recycling plant for a disposal
which is not harmful to the environ-
ment.
Attention!
The plug-in transformer is supplied with haz-
ardous mains voltage (230 V~). Leave servic-
ing to skilled personnel only. Inexpert handling
or modification of the unit may cause an elec-
tric shock hazard. Furthermore, any guarantee
claim will expire if the unit has been opened.
Caution!
With the button pressed, the 12 V phantom
power is switched on. In this case no
microphones with unbalanced output must
be connected as these microphones may
be damaged.
6
GB
