IMG STAGELINE MMX-842 Manual De Instrucciones página 8

4.2 Line audio sources
GB
Connect units with line output level (e. g. musical
instruments) to the inputs LINE IN (4) of the
stereo channels 5 / 6 and 7/ 8. The 6.3 mm jacks
for the left (L) channel and the right (R) channel
are balanced. However, it is also possible to con-
nect units with unbalanced output via 2-pole
6.3 mm plugs. For connecting a mono unit, only
use the jack L. Then the mono signal is internally
switched to the right channel and the left chan-
nel.
The input STEREO AUX RETURN (10) can be
used as an additional input for a line source as
far as it is not used as a return input for an effect
unit ( chapter 4.3.2). The 6.3 mm jacks for the
LEFT channel and the RIGHT channel are
unbalanced. For a mono unit only use the jack
LEFT.
If the RCA input TAPE IN (14) is not used by
a recorder ( chapter 4.4), an additional stereo
line unit may be connected to this input (e. g. a
CD player for background music in playing
breaks).
4.3 Effect units
4.3.1 Inserting an effect unit
Effect units (e. g. units for sound processing like
compressors, equalizers)
inserted into the mono channels 1 to 4: The
channel signal is taken off after the gain control
(3), it is completely routed via the effect unit and
fed back into the channel at the same place of
the signal way.
Connect the effect unit to the 6.3 mm jack
INSERT (2) of the corresponding channel. The
plugs must be connected as follows:
tip = Send (output)
ring = Return (input)
sleeve = ground
For connection of effect units with separate input
jacks and output jacks, Y cables are required,
e. g. MCA-202 from MONACOR.
Connection of the Y cable MCA-202
4.3.2 Using the effect send way
Via the effect send way, signal parts can be
taken off from the input channels 1 to 7/ 8, routed
via an effect unit (e. g. echo unit) and mixed to
the master signal after processing them. The
send way is "post-fader", i. e. the signal pick-up
is after the level control (9) of the channel.
1) Connect the input of the effect unit via a
6.3 mm plug to the mono output FX SEND
(11).
2) Connect the output of the effect unit via
6.3 mm plugs to the input STEREO AUX
RETURN (10): LEFT = left channel, RIGHT =
right channel. For an effect unit with mono
output only use the jack LEFT.
8
4.4 Recorder
A recorder may be connected to the RCA jacks
TAPE IN and TAPE OUT:
1) For recording, connect the input of the
recorder to the stereo output TAPE OUT (20).
The recording output receives the master sig-
nal adjusted with the control MAIN MIX (25).
2) For reproducing, connect the output of the
recorder to the stereo input TAPE IN (14).
4.5 Monitor system and headphones
The sound mixing may be monitored via stereo
headphones and / or via a monitor system in a
separate control room. Connect the headphones
(minimum impedance 8 Ω) to the 6.3 mm jack
PHONES (12). Connect the amplifier of the mon-
itor system to the output CTRL ROOM OUT (13);
the 6.3 mm jacks for the left (L) channel and right
(R) channel are unbalanced.
Depending on the button TAPE TO CTRL
ROOM (16), it is possible to monitor at both out-
puts either the master signal adjusted with the
control MAIN MIX (25) or the signal of the input
TAPE IN (14).
4.6 Amplifier for PA application
The output MAIN OUT (19) receives the master
signal adjusted with the control MAIN MIX (25).
can directly be
The amplifier for PA application may be con-
nected to this output (or another unit with line
input such as a second mixer). The 6.3 mm jacks
for the left (L) channel and the right (R) channel
are unbalanced.
4.7 Power supply unit
For power supply only use the supplied power
supply unit. Connect the power supply unit to the
power supply jack (26) on the rear side. Connect
the mains plug of the power supply unit to a
socket (230 V~ / 50 Hz).
5 Operation
CAUTION
5.1 Switching on / off
1) To prevent switching noise and an excessive
volume, set the output controls PHONES /
CONTROL ROOM (18) and MAIN MIX (25)
to minimum prior to operation.
2) Depending on the microphone type con-
nected, either press or disengage the button
PHANTOM (21) for the 48 V phantom power
( chapter 4.1).
3) To switch the mixer on and off, use the switch
at the mains cable of the power supply unit.
With the unit switched on, the POWER LED
(22) lights up.
Never adjust the audio system
and the headphones to a very
high volume. Permanent high vol-
umes may damage your hearing!
The human ear will get accus-
tomed 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.
5.2 Mixing the audio sources
The following operating steps merely serve as
an aid, other procedures are also possible.
1) As a basic setting first
a) turn all controls GAIN (3), all equalizer
controls (5) and all controls PAN and BAL
(7) to mid-position.
b) disengage the TAPE buttons (16 and 17).
c) turn back fully counter-clockwise all con-
trols FX (6), all controls LEVEL (9) and the
control AUX RETURN (15).
d) turn the master control MAIN MIX (25) to
mid-position "0".
2) For level control of one of the mono channels
1 to 4, feed an audio signal to the channel
and turn its LEVEL control (9) to mid-position
"0". Then adjust the input amplification with
the control GAIN (3) of the channel so that the
LED level indication (24) lights up at 0 dB.
Then adjust the sound with the equalizer con-
trols (5): HI for the high range, MID for the
midrange, LO for the bass range. The over-
load indication PEAK (8) should only shortly
light up at signal peaks, if at all. If it lights up
permanently, turn back the control GAIN
and / or the equalizer controls accordingly.
Then fully turn back the LEVEL control and
control the level of the other mono channels
in the same way.
3) For the sound adjustment of the stereo chan-
nels 5 / 6 and 7/ 8 fully turn back all LEVEL
controls (9) of the other channels and turn up
the LEVEL control of the corresponding
stereo channel so that the sound can be
adjusted with the three equalizer controls (5)
in an optimum way.
4) When all adjustments for level matching and
all sound adjustments have been made, mix
the signals of the channels 1 to 7/ 8 in the
desired volume ratio with the LEVEL controls
(9).
Always turn the LEVEL controls of the
channels not used fully counter-clockwise.
5) For the channels 1 to 4 place the mono sig-
nals in the stereo sound with the panorama
controls PAN (7) and for the channels 5 / 6
and 7/ 8 adjust the balance of the stereo sig-
nals with the controls BAL (7).
6) If the effect send way is used, see chapter
5.2.1 to adjust the effect way.
7) If the input STEREO AUX RETURN (10) is
not used as a return input for an effect unit
( chapter 4.3.2) but as an input for an addi-
tional line audio source, mix the input signal
of the connected source to the signal master
with the level control AUX RETURN (15).
8) To feed the signal of the jacks TAPE IN (14),
e. g. tape or CD reproduction, to the signal
master, press the button TAPE TO MIX (17).
For feeding only the TAPE IN signal to the
master, the level controls of all other audio
sources must be fully turned back.
Note: When a recording made via the output TAPE
OUT (20) is reproduced via the input TAPE IN at the
same time, the button TAPE TO MIX must not be
pressed, otherwise there will be a feedback.