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MXR-4
Order number 20.0250
MXR-6
Order number 20.0280
ELECTRONICS FOR SPECIALISTS
ELECTRONICS FOR SPECIALISTS
1
2
3/4
1
LINE
L
R
MIC/LINE
MIC/LINE
2
LOW
LOW
3/4
ON
CUT
ON
CUT
USB
G
G
G
PK
PK
PK
A
A
A
I
I
I
N
N
N
13
15
MIN
MAX
MIN
MAX
MIN
H
H
H
10
10
10
16
−15 dB +15
−15 dB +15
−15 dB +15
0 dB
0 dB
0 dB
L
L
L
10
10
10
−15 dB +15
−15 dB +15
−15 dB +15
15
15
15
20
20
20
F
F
F
X
X
X
25
25
25
30
30
30
17
MIN
MAX
MIN
MAX
MIN
40
40
40
60
60
60
P
P
P
A
A
A
N
N
N
18
L
R
L
R
L
1
2
3/4 | USB
14
Representation of MXR-4; the audio mixer MXR-6 provides two additional mono input channels
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 tech-
nology. Please read these instructions carefully
prior to operating the unit and keep them for
later reference.
Detailed information can be found on the IMG
STAGELINE homepage: www.img-stageline.com
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 addition, the
audio player is equipped with a Bluetooth module.
MONACOR INTERNATIONAL GmbH & Co. KG • Zum Falsch 36 • 28307 Bremen • Germany
ELECTRONICS FOR SPECIALISTS
5
USB
PH. PWR
10
48 V
M L
M R
8
6
3
DSP
4
MXR-4
RET
FX
H.P.
7
9
11
12
19
23
MAX
P
R
10
O
G
ON
D
0 dB
E
6
L
A
3
10
Y
20
26
MIN
MAX
0 dB
15
3
20
F
10
X
25
24
30
21
MAX
MIN
MAX
40
60
R
H.
E
P.
T
R
MIN
MAX
MIN
MAX
M
22
25
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 danger-
ous mains voltage. Leave servicing to
skilled personnel; inexpert handling
may result in electric shock.
•
The units are suitable for indoor use only. Protect
them against dripping water, splash water and high
air humidity. The admissible ambient temperature
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.
ELECTRONICS FOR SPECIALISTS
ELECTRONICS FOR SPECIALISTS
•
No guarantee claims for the units and no liabil-
ity 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 environment.
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 dec-
larations of conformity are available on the Internet:
www.img-stageline.com
The Bluetooth module is generally approved for oper-
ation 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, un-
desired 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, additional 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 computer
– 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
Copyright
ELECTRONICS FOR SPECIALISTS
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 from 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 signal 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 frequencies (H) and
low frequencies (L)
17 Control FX to add the channel signal to the inter-
nal 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 (MXR 6),
the control is used as a balance control
19 Rotary knob PROG for effect selection; the dis-
play (6) will briefly indicate 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 effect is to be added
22 Control RET (return) to add the signal 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 mes-
sage "HI"
24 Output level indicator and power indicator
25 Volume control H. P. for the headphones
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)
by MONACOR INTERNATIONAL. All rights reserved.
©
ELECTRONICS FOR
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 (microphones, instru-
ments, 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 output 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 provided to the USB
port 5 V⎓/1 A (located 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 position 0 dB;
use the channels faders (14) to mix the input sig-
nals.
If a channel fader must be advanced almost
to its maximum, turn the control GAIN (15) to the
right to increase the input gain. If the LED indicator
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 headphones (make sure
that the volume is not too high; high volumes may
damage your hearing!).
Subject to technical modification.
A-2019.99.01.10.2019
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