Operation Manual

2 Safety Notes
This unit corresponds to all relevant directives of
the EU and is therefore marked with .
Please observe the following items in any case:
G
The unit is suitable for indoor use only. Protect
it against dripping water and splash water,
high air humidity and heat (admissible ambi-
ent temperature range: 0 – 40 °C).
G
Do not place any vessel filled with liquid on the
unit, e. g. a drinking glass.
G
Do not operate the unit and immediately dis-
connect the mains plug from the socket
1. if the unit or the mains cable is visibly dam-
aged,
2. if a defect might have occurred after the unit
was dropped or suffered a similar accident,
3. if malfunctions occur.
In any case the unit must be repaired by
skilled personnel.
G
Never pull the mains cable to disconnect the
mains plug from the socket, always seize the
plug.
G
For cleaning only use a dry, soft cloth; never
use water or chemicals.
G
No guarantee claims for the unit and no liabil-
ity for any resulting personal damage or mate-
rial damage will be accepted if the unit is used
for other purposes than originally intended, if it
is not correctly connected or operated, or if it
is not repaired in an expert way.
G
Important for U. K. Customers!
The wires in this mains lead are coloured in
accordance with the following code:
blue = neutral
brown = live
As the colours of the wires in the mains lead of
this appliance may not correspond with the
coloured markings identifying the terminals in
your plug, proceed as follows:
1. The wire which is coloured blue must be
connected to the terminal which is marked
with the letter N or coloured black.
2. The wire which is coloured brown must be
connected to the terminal which is marked
with the letter L or coloured red.
3 Applications
The mixer MPX-40DMP, featuring four stereo
channels and an additional DJ microphone
channel, is specially designed for professional
DJ applications. The integrated MP3 player will
replay MP3 audio files from a USB storage
medium (e. g. USB flash drive) or from an SD /
MMC card. Many additional features of the MP3
player have precisely been matched to DJ appli-
cations, e. g. single title replay, change of replay
speed (±16 %), replay of a loop, brake effect and
reverse replay.
The mixer is designed for installation into a
rack for units of a width of 482 mm (19″). For
rack installation, 4 RS (rack spaces) = 177 mm
are required; however, the mixer can also be
placed as desired.
4 Connection
Prior to making or changing any connections,
switch off the MPX-40DMP and the units to be
connected.
1) Connect the stereo audio sources to the cor-
responding RCA input jacks (44) of the chan-
nels 1 – 4 (white jack L = left channel; red jack
R = right channel):
— units with line level output (e. g. CD player,
tape deck, radio) to the jacks LINE or CD;
— turntables with magnetic system to the
jacks PHONO. The clamp screw GND
(45) is provided as a common ground
point: Connect the ground connections of
the turntables to the clamp screw.
2) Connect a DJ microphone to the XLR jack
MIC (2) on the upper side.
3) Several stereo outputs are available to con-
nect amplifiers:
— outputs MASTER (41): to connect the
amplifier for PA application. It is also pos-
sible to use the XLR jacks and RCA jacks
at the same time to connect two ampli-
fiers.
— output BOOTH (42): e. g. to connect an
amplifier for a monitoring system or for PA
application in adjoining rooms
4) For audio recordings, connect the recorder to
the output REC (43). The recording level is
independent of the position of the output con-
trols MASTER and BOOTH.
5) For prefader listening to the input channels or
for monitoring the sum signal ahead of the
output controls MASTER and BOOTH, con-
nect headphones (minimum impedance 8 Ω)
to the 6.3 mm jack PHONES (14).
6) Connect the mains cable provided to the
mains jack (40) first, and then connect it to a
mains socket (230 V~ / 50 Hz).
5 Operation of the Mixer
Prior to switching on, set the output controls
MASTER (23) and BOOTH (24) to minimum to
prevent switching noise. Switch on the mixer
with the POWER switch (12). The power LED
ON (8) lights up; the display (11) and some but-
tons are illuminated.
After operation, switch off the mixer with the
POWER switch.
5.1 Mixing the audio sources
Crossfading between two channels
The following operating steps are merely an aid;
you may also proceed differently.
1) For basic setting:
a) Set all channel faders (15) and the control
MIC LEVEL (3) to minimum.
b) Set all tone controls (1, 7) to mid-position.
c) Deactivate the crossfading function. For
this purpose, set the two assign switches
CROSSFADER ASSIGN A (19) and B
(21) to the same channel number and
slide the crossfader (20) to the left stop.
d) Make sure to deactivate the talkover func-
tion: The button TALK OVER must not be
illuminated; disengage the button, if nec-
essary.
e) Use the input selector switches (4) to
select the desired signal input for each
stereo channel:
CH 1, CH 2: line input or phono input
CH 3: line input or CD input
CH 4: line input or MP3 player
f) Open the MASTER control (23) to such an
extent that the subsequent settings are
reproduced well via the audio system con-
nected.
g) Feed an audio signal (e. g. music piece)
each to the stereo channels. Use the
GAIN controls (6) to control the channels
one after another to an optimum level via
the VU meters of the channels (5) so that
the red LED “3” lights up with level peaks.
To monitor a stereo channel and to adjust
the sound, open the corresponding chan-
nel fader (15) accordingly. Adjust the
sound with the controls HI, MID and LOW.
Then readjust the level control with the
GAIN control, if necessary, and close the
channel fader.
2) After the basic setting, mix the input signals
with the channel faders or fade them in or out.
3) Use the MASTER control (23) to adjust the
definitive volume of the sum signal. The sig-
nal level is indicated on the VU meter (25).
Usually there is an optimum level control at
0 dB: However, if the output level of the mixer
is too high or too low for the amplifier con-
nected to the jacks MASTER (41), increase
or decrease the sum signal accordingly.
For an amplifier connected to the jacks
BOOTH (42), adjust the volume with the con-
trol BOOTH (24).
4) For a microphone announcement, adjust the
volume with the control MIC LEVEL (3) and
the sound with the controls HI and LOW (1).
To make it easier to understand the an-
nouncement, press the button TALK OVER
(13) to reduce the volume of the stereo chan-
nels by 15 dB.
5) The crossfader (20) is used to crossfade
between two stereo channels. For this pur-
pose, select the two channels to be used for
crossfading with the assign switches
CROSSFADER ASSIGN A (19) and B (21).
Adjust the behaviour of the crossfader (20)
with the switch CURVE (22):
left position
sharp crossfading with a wide range in
which both channels are reproduced at
the same volume
right position
soft and smooth crossfading
5.2 Prefader listening to the channels
1 – 4 and to the sum signal
It is possible to monitor the stereo input channels
1 – 4 individually via headphones, even if the
corresponding channel fader (15) has been set
to minimum. This feature is used, for example, to
select the next title to be replayed.
With the prefader listening function, it is also
possible to monitor the master channel via head-
phones, even if the MASTER control (23) has
been set to minimum.
1) For prefader listening to an input channel,
press the corresponding button PFL (17).
2) Set the MIXING control (18) to the position
PFL.
CAUTION Never adjust the audio system or
the headphones to a very high vol-
ume. Permanent high volumes
may damage your hearing! Your
ear will get accustomed to high
volumes which do not seem to be
that high after some time. There-
fore, do not further increase a high
volume after getting used to it.
WARNING
The unit uses dangerous mains
voltage. Leave servicing to skilled
personnel only. Inexpert handling
may result in electric shock.
If the unit is to be put out of operation
definitively, take it to a local recycling
plant for a disposal which is not harmful
to the environment
9
GB