Operation; Basic Settings; Basic Setting Of Channels Ch 1 To Ch 4; Basic Setting Of The Microphone Channels - IMG STAGELINE MPX-222BPM Manual De Instrucciones

- units with line level output (e.g. mindisk recorder,
CD player, cassette recorder) to the jacks CD
and LINE (30);
- turntables with magnetic system to the PHONO
jacks (31).
The clamping screw GND (33) can be used as
common grounding point: connect the grounding
connection of the turntable to the clamping
screw.
2) Connect mono microphones to the XLR jacks (7) on
the front plate or to the 6.3 mm jacks (32) on the
rear side of the unit.
3) Connect the input of the amplifier to the master out-
put MASTER (29).
4) If a monitor system is present, connect the amplifier
of the monitor system to the BOOTH output (28).
5) For audio recordings, connect the recording unit to
the record output REC (27). The recording level is
independent of the position of the master control
(21).
6) For an optimum console illumination a gooseneck
lamp (12 V/5 W max.) can be connected to the BNC
jack LAMP (4), e. g. the lamp GNL-205 of the "img
Stage Line" range. The lamp is switched on and off
with the mixer.
7) Via stereo headphones the pre fader level of the
input channels CH 1 to CH 4 as well as the current
music programme ahead of the master control (21)
can be monitored (see chapter 5.6). Connect the
headphones (impedance ≥ 8 Ω) to the jack
8) Finally connect the plug of the mains cable (26) to a
mains socket (230 V~/50 Hz).

5 Operation

Prior to switching on, the output controls MASTER (21)
and BOOTH (22) should be set to minimum to avoid
strong inrush noise. Then switch on the mixer with the
POWER switch (5). The LED above the switch lights
up to indicate that the unit is ready for operation. Then
switch on the connected units.
Caution! Never adjust the audio system or the head-
phones to a very high volume. Permanent high vol-
umes may damage your hearing! The human ear will
get accustomed to high volumes which do not seem
to be that high after some time. Therefore, do not fur-
ther increase a high volume after getting used to it.

5.1 Basic settings

5.1.1 Basic setting of channels CH 1 to CH 4

For an optimum level adjustment of the audio sources
connected to the input channels CH 1 to CH 4, turn all
gain controls (6) and equalizer controls (1) to mid-posi-
tion first, and set the C.F. ASSIGN switches (13 and
19) to "x" (crossfading function switched off).
1) Select the connected signal sources with the se-
lector buttons (20).
Button not pressed:
the PHONO input (for channels CH 1 and CH 3)
or the CD input (for channels CH 2 and CH 4) is
selected.
Button pressed – LED above the button lights up:
the LINE input of the channel is selected.
2) With the master control (21) the total level of all
connected audio sources is adjusted. Set the mas-
ter control to approx.
e. g. to position 7.
3) The selector button (3) must not be pressed: with
this button position the VU meter (2) shows the
stereo output level which is present at the master
output MASTER (29).
4) To control a channel, set the faders (15) of the
remaining channels to minimum and feed the audio
signals (test signals or music pieces) to the respec-
tive input channel.
5) By means of the VU meter control the level of the
channel with the fader. The optimum level is ob-
tained if the 0 dB LEDs of the VU meter light up with
music peaks. In case of overload the red LEDs light
up.
After the level adjustment the fader should be
set to approx.
there is sufficient control range for fading in and out.
6) If the fader is slided up very much or only very little,
the level must be matched by adjusting the input
amplification: turn back or turn up the gain control
(6) of the channel correspondingly.
(24).
The input amplification can be adjusted in an
optimum way by the display of the pre fader level.
For this purpose press the button (3) to switch the
VU meter to the display mode "PFL", slide the con-
trol MIX (23) to the left stop to position "PFL", and
press the PFL button (12) of the channel: the VU
meter now shows the signal level of the channel
ahead of the channel fader.
7) Release button (3) to switch the VU meter to the
display mode "MASTER" again, and adjust the de-
sired sound with the equalizer controls (1) of the
channel – a 3-way equalizer each for the channel
group CH1/CH2 and the channel group CH3/CH4:
with the three controls the high range (HIGH con-
trols), the midrange (MID controls), and the bass
range (LOW controls) can be boosted (max. 15 dB)
or attenuated to a large extent (max. 30 dB). If the
controls are in mid-position, there is no influence on
the frequency response.
Note: Sound adjustments influence the levels.
Therefore, after a sound adjustment, check the
channel level by means of the level display and cor-
rect it, if necessary.
8) Make the level and sound adjustments for the re-
maining connected input channels as described
above.

5.1.2 Basic setting of the microphone channels

To switch on a microphone channel, press the ON AIR
button (11) of the channel. The LED next to the button
lights up as indication. Set the faders (15) of the input
2
/ of its maximum position,
3
2
/ of its maximum position so that
3
GB
11