MONACOR INTERNATIONAL GmbH & Co. KG • Zum Falsch 36 • 28307 Bremen • Germany Copyright
©
by MONACOR INTERNATIONAL. All rights reserved. A-2019.99.03.05.2020
ELECTRONICS FOR SPECIALISTS ELECTRONICS FOR SPECIALISTS ELECTRONICS FOR SPECIALISTS ELECTRONICS FOR SPECIALISTS ELECTRONICS FOR SPECIALISTS ELECTRONICS FOR SPECIALISTS
MXR-4
H. P.FXRET
USB PH. PWR
48 V
M L M R
1 2
MIC/LINE MIC/LINE
LINE
RL
3/4
ON
LOW
CUT
ON
LOW
CUT
3/4
USB
10
10
20
25
30
40
60
0 dB
15
M
DSP
3
6
ON
3
10
0 dB
MIN MAX
H.
P.
MIN MAX
MIN MAX
P
R
O
G
D
E
L
A
Y
F
X
R
E
T
G
A
I
N
H
L
F
X
P
A
N
MIN MAXL R
3/4
|
USB
−15 dB +15
−15 dB +15
MIN MAX
MIN MAX
G
A
I
N
H
L
F
X
P
A
N
G
A
I
N
H
L
F
X
P
A
N
−15 dB +15
−15 dB +15
MIN MAX
L R
MIN
PK
MAX
1
−15 dB +15
−15 dB +15
MIN MAX
L R
MIN
PK
MAX
2
PK
10
10
20
25
30
40
60
0 dB
15
10
10
20
25
30
40
60
0 dB
15
10
10
20
25
30
40
60
0 dB
15
6
42
1
5
3
16
15
17
20
26
21
18
19 23
10
8
24
13
14 22 25
7
9 11 12
Audio mixer
These brief instructions give a quick
overview of how to use the audio
mixer. They are intended for users
with basic knowledge of audio
technology. Please read these in-
structions carefully prior to operat-
ing the unit and keep them for later
reference.
1 Applications
This compact mixer can be used in many
ways to mix audio signals (microphones,
instruments, units with line level). The
mixed signal is output via the 6.3 mm
jacks M L, M R (10) and the USB port (5).
The USB port is also used as an input for
audio data when the mixer is connected
to a computer and for the integrated
audio player to replay MP3, WAV and
WMA files from a USB flash drive. In ad-
dition, the audio player is equipped with
a Bluetooth module.
2 Safety Notes
The units (mixer and power supply unit)
correspond to all relevant directives of
the EU and are therefore marked with
.
WARNING The power supply unit
uses dangerous mains
voltage. Leave servicing
to skilled personnel; inex-
pert handling may result
in electric shock.
•
The units are suitable for indoor use
only. Protect them against dripping
water, splash water and high air hu-
midity. The admissible ambient tem-
perature range is 0 – 40 °C.
•
Immediately disconnect the power
supply unit from the mains socket,
1. if a unit is visibly damaged,
2. if a defect might have occurred after
a unit was dropped or suffered a
similar accident,
3. if malfunctions occur.
In any case the units must be repaired
by skilled personnel.
•
For cleaning only use a dry, soft cloth;
never use water or chemicals.
•
No guarantee claims for the units and
no liability for any resulting personal
damage or material damage will be
accepted if the units are used for other
purposes than originally intended, if
they are not correctly connected or
operated, or if they are not repaired
in an expert way. Likewise, no liability
will be accepted for data loss caused
by a defect or operating errors and
for any consequential damage of this
data loss.
If the units are to be put out
of operation definitively, take
them to a local recycling
plant for a disposal which is
not harmful to the environ-
ment.
2.1 Conformity and approval
Herewith, MONACOR INTERNATIONAL
declare that the Bluetooth module in the
units MXR-4 and MXR-6 complies with
the directive 2014 / 53 / EU. The EU decla-
rations of conformity are available on the
Internet:
www.img-stageline.com
The Bluetooth module is generally ap-
proved for operation in EU and EFTA
countries; it is licence-free and requires
no registration.
3 Overview
The USB port 5 V⎓/1 A for power supply
via the power supply unit provided is
located on the rear side of the unit.
1 Combined input jack MIC / LINE for
microphones (XLR) and audio sources
with line level (6.3 mm)
2 Low-cut filter: when the button is
pressed, undesired signals with low
frequencies, e. g. impact sound, will
be suppressed
3 Input LINE of the stereo channel via
RCA jacks and 6.3 mm jacks for units
with line level (e. g. CD player, addi-
tional mixer)
4 Input selector switch:
Button disengaged: input LINE (3)
Button engaged: input USB port (5) or
audio player with Bluetooth module
5 USB jack:
– output for mixed digital signal
– input for audio data from the com-
puter
– input for audio files from a USB
flash drive to be replayed by means
of the audio player
6 Display for the audio player; when
the USB port (5) is not connected,
“no” will be shown on the display
7 Buttons for the audio player with
Bluetooth module
II REC:
start / pause for replay / recording
Briefly press I
−
+
I :
previous / next title
Keep I
−
+
I pressed:
to adjust the volume
MODE: switch between
– replay (indication: “USb”)
– Bluetooth reception (“bt”)
– recording on a USB flash
drive (“rEC”)
8 On / Off switch PH. PWR of the 48 V
phantom power supply for all XLR
microphone inputs MIC(1)
Caution: Only use the switch when
the mixer is switched off; otherwise,
there may be loud switching noise.
9 Input RET, e. g. for an external effect
signal
10 Stereo output M L, M R for the mixed
signal
11 Output FX of the effect send way for
connection to the input of an effect
unit
12 Jack H. P. for headphones
13 LED indicator PK: will light up briefly
when the maximum undistorted sig-
nal level has been reached. If it lights
up for a longer time, the channel is
overloaded; in this case, turn back the
control GAIN (15).
14 Channel fader for the volume of the
channel
15 Control GAIN for the input gain
16 Sound control for the high frequen-
cies (H) and low frequencies (L)
17 Control FX to add the channel signal
to the internal effect unit and to the
output FX (11)
18 Panorama control PAN to place the
mono signal in the stereo sound,
for the stereo channel 3 / 4 (MXR-4) or
5 / 6 (MXR6), the control is used as a
balance control
19 Rotary knob PROG for effect selec-
tion; the display (6) will briefly indi-
cate the effect selected (01 – 16)
20 Control DELAY for the effect delay
time
21 Control FX to add the internal effect
signal to the output signal; set the
control to MIN when no internal ef-
fect is to be added
22 Control RET (return) to add the sig-
nal of the jack RET (9) to the output
signal, e. g. of an external effect unit
23 Power switch ; when the mixer is
switched on, the display will briefly
show the welcome message “HI”
24 Output level indicator and power
indicator
25 Volume control H. P. for the head-
phones
26 Master fader for the output level of
the mixed signal at the jacks M L,
M R(10) and at the USB port (5)
4 Quick Start
To avoid loud interfering noise, set the
control H. P. (25) to MIN and close the
master fader (26) prior to connection /
disconnection and switch-on.
1) Connect the signal sources (micro-
phones, instruments, etc.) to the input
jacks (1, 3). Connect the microphones
by means of XLR plugs and units with
line level by means of 6.3 mm plugs
or RCA plugs. When connecting signal
sources to the input jacks LINE (3),
make sure that the button (4) beneath
the input jacks is not pressed; when
the USB port (5) or the audio player
is used, press the button. Press the
button PH. PWR (8) only when using
microphones that require phantom
power supply.
When a computer is used to replay
audio files or for recordings, connect
the computer to the USB port (5).
2) Connect the unit to which the mixed
signal is to be sent (amplifier, active
speaker system, recorder) to the out-
put jacks M L, M R (10). Headphones to
monitor the signal can be connected to
the jack H. P. (12).
3) Connect the power supply unit pro-
vided to the USB port 5 V⎓/1 A (lo-
cated on the rear side of the unit!) and
to a mains socket (230 V/ 50 Hz).
4) To make the basic adjustments, first
– set the controls GAIN (15), H, L (16)
and PAN (18) to mid-position
– set the controls FX (17, 21) and
RET(22) to MIN
– close the channel faders (14)
5) Switch on the signal sources, then
switch on the mixer by means of
the button
(23) and finally switch
on the unit connected to the output
jacks(10). To switch off, proceed in the
reverse order.
6) Move the master fader (26) to the posi-
tion 0 dB; use the channels faders (14)
to mix the input signals.
If a channel fader must be ad-
vanced almost to its maximum, turn
the control GAIN (15) to the right to
increase the input gain. If the LED in-
dicator PK (13) lights up for a longer
period of time, turn back the control
accordingly. The LED indicator PK may
only briefly flicker at signal peaks.
7) Use the controls H and L (16) to adjust
the sound of the input signals. Use the
master fader (26) to adjust the output
signal for the subsequent unit to an
optimum level. Use the control H. P.
(25) to adjust the volume of the head-
phones (make sure that the volume is
not too high; high volumes may dam-
age your hearing!).
Subject to technical modification.
MXR-4 Order number 20.0250
MXR-6 Order number 20.0280
English
MXR-4; the audio mixer MXR-6 provides two additional mono input channels
