9
English
5 Operation
CAUTION
Never adjust the audio sys-
tem or the headphones to a
very high volume . Permanent
high volumes may damage
your hearing! Your ear will get
accustomed to high volumes which do not
seem to be that high any more after some
time . Therefore, do not further increase a
high volume after getting used to it .
5.1 Basic adjustments
of the input channels
The following steps for level matching and
sound correction, are merely an aid; other
procedures are possible .
1) In all input channels, turn back the controls
LEVEL (10) to the left stop .
In the mono input channels, set all
controls GAIN (3), all controls EQ (4) and
all controls PAN (8) to mid-position and
disengage all buttons
(5) .
In the stereo input channels, disengage
all b4 / −10 (6) and set all controls
BAL (8) to mid-position .
2) Turn back the control AUX SEND MASTER
(25) to the left stop .
3) Disengage the buttons TAPE [/ USB*] TO
MIX (19), TAPE TO BOOTH / PHONES (20)
and AUX SEND TO BOOTH (21) .
4) Set the control MASTER (16) to “0 dB” .
5) Feed an audio signal to the correspond-
ing input channel (e . g . sing into a micro-
phone, play a musical instrument) .
6) To adjust a
mono channel
,
set the control LEVEL (10) to mid-position .
Adjust the control GAIN (3) so that the
LED level indicators (15) light up at 0 dB .
Use the three EQ controls (4) to adjust the
sound . If required, press the button
(5)
to suppress low-frequency interference
(e . g . impact noise, hum) . Then, if neces-
sary, use the control GAIN to readjust the
level adjustment . The LED PEAK (9) should
briefly flash for signal peaks only . If it lights
permanently, turn back the control GAIN
and / or the equalizer controls accordingly .
To adjust a
stereo channel
,
turn up the control LEVEL (10) so that the
LED level indicators (15) light up at 0 dB . If
you have to turn up the control considera-
bly, press the 4 / −10 (6) to boost
the level (12 dB) for the channel . If you
have to turn back the control considerably
and the LED PEAK (9) of the channel lights
permanently, attenuate the output level of
the audio source .
7) After adjusting a channel, turn back its
control LEVEL to the left stop, and then
adjust the next channel .
5.2 Mixing audio sources
1) Slide up the control MASTER (16) so that
the mixing ratio of the audio sources can
be adjusted in an optimum way .
2) When all level matching adjustments and
all sound adjustments have been made
(
☞
chapter 5 .1), use the controls LEVEL
(10) to mix the signals of the input chan-
nels in the volume ratio desired . Always
turn the controls LEVEL of the channels
not used back to the left stop .
3) For the mono channels, use the panorama
controls PAN (8) to place the mono signals
in the stereo sound . For the stereo chan-
nels, use the controls BAL (8) to adjust the
balance of the stereo signals .
4) When an effect unit has been connected,
please refer to chapter 5 .2 .1 .
5) To add the input signal of the jacks TAPE
IN (17) and of the USB port (28)* to the
signal sum, press the button TAPE [/ USB*]
TO MIX (19) .
Note:
If, during recording via the jacks TAPE OUT
or the USB port*, the recording signal is sent as
an input signal to the jacks TAPE IN or to the USB
port*, make sure that the button TAPE [/ USB*]
TO MIX is disengaged; otherwise, there will be
feedback .
6) Use the control MASTER (16) to adjust the
definitive volume of the sum signal; check
the LED level indicators (15) while adjusting
the volume . Make sure that the two but-
tons (20, 21) for the monitor function are
disengaged; otherwise, the LED level indi-
cators will not indicate the level of the sum
signal . In case of overload, the red LEDs
CLIP of the level indicators will light up .
5.2.1 Adjusting the effect send way
Connect the effect unit to the output AUX
SEND (13) and to the LINE input (2) of an
input channel not used .
1) To make sure that the subsequent effect
adjustments are audible, first set the fol-
lowing controls approximately to mid-
position:
– AUX SEND MASTER (25)
– the control LEVEL (10) of the channel
to which the effect unit has been con-
nected
2) Use the controls AUX SEND (7) to add the
signals of the input channels to the effect
way . The signal will be picked up after the
control LEVEL (10), i . e . the effect part of
a channel is always proportional to the
channel level adjusted .
Note:
Turn back the control AUX SEND of the chan-
nel to which the effect unit has been connected
to the left stop; otherwise, there will be feedback .
3) Use the control AUX SEND MASTER (25)
to adjust the level for the output signal of
the effect way (sum of all signals added to
the effect way) so that the effect unit will
not be overloaded .
4) Use the control LEVEL (10) of the channel to
which the effect unit has been connected
to add the effect signal to the sum signal .
5.3 Monitoring via headphones and
monitor system
The two assign buttons (20, 21) for the mon-
itor function define which signal will be mon-
itored via the outputs BOOTH OUT (12) and
PHONES (14) and indicated by the LED level
indicators (15):
– If none of the buttons is pressed, the sum
signal adjusted with the control MASTER
(16) will be monitored and indicated .
– If only the button TAPE TO BOOTH / PHONES
(20) is pressed, the input signal of the jacks
TAPE IN (17) and of the USB port (28)* will
be monitored and indicated (e . g . to check
a recording) .
– If the button AUX SEND TO BOOTH (21) is
pressed, the signal of the effect way will
be monitored and indicated, ahead of the
output control AUX SEND MASTER (25) . In
this case, the position of the button TAPE
TO BOOTH / PHONES is irrelevant .
Use the control BOOTH / PHONES (23) to ad-
just the monitoring volume .
6 Specifications
Input sensitivity
Mic: � � � � � � � � � � � � � 0�5 mV
Line (mono channel): � 1 mV
Line (stereo channel): 10 mV
Tape In: � � � � � � � � � � � 100 mV
Output level
Master Out / Tape Out: 650 mV
(at indication 0 dB)
Booth Out: � � � � � � � � 2 V
(at indication 0 dB)
Aux Send: � � � � � � � � � 9�5 V max�
Headphone impedance: ≥ 8 Ω
USB interface*: � � � � � � USB 2�0
(Full Speed)
Frequency range: � � � � � 20 – 20 000 Hz
THD: � � � � � � � � � � � � � � < 0�05 %
S / N ratio: � � � � � � � � � � > 74 dB
(A weighted)
Crosstalk: � � � � � � � � � � −63 dB
Equalizer controls
LOW: � � � � � � � � � � � � ±15 dB / 80 Hz
MID: � � � � � � � � � � � � ±15 dB / 2�5 kHz
HIGH: � � � � � � � � � � � � ±15 dB / 12 kHz
Low-cut filter: � � � � � � � 75 Hz
Phantom power: � � � � � +48 V
Power supply: � � � � � � � ~ 18 V via power
supply unit provided,
connected to 230 V/ 50 Hz
Ambient temperature: � 0 – 40 °C
Dimensions (W × H × D)
MMX-24USB: � � � � � � 220 × 65 × 260 mm
MMX-44: � � � � � � � � � 280 × 50 × 260 mm
Weight
MMX-24USB: � � � � � � 2�1 kg
MMX-44: � � � � � � � � � 2�2 kg
Suitable operating systems for data transfer via USB
interface*:
Windows 2000
,
Windows XP
or sub-
sequent
Windows
versions,
Mac OS 9.0.4
or later,
Mac OS X
Windows is a registered trademark of Microsoft Corporation in
the USA and other countries. Mac OS is a registered trademark of
Apple Inc. in the USA and other countries.
Subject to technical modification .
All rights reserved by MONACOR
®
INTERNATIONAL GmbH & Co. KG. No part of this instruction manual
may be reproduced in any form or by any means for any commercial use.
* for model MMX-24USB only