Applications; Setting Into Operation; Making Adjustments; Groundlift Switch - Monacor MCX-200/SW Mode D'emploi

230V~
50Hz
7
Crossover Network for Subwoofer
These operating instructions are intended for users
with basic knowledge in audio technology . Please
read the instructions carefully prior to operating the
unit and keep them for later reference .
1 Overview
1 Level control for the subwoofer channels
2 Push-button switch for the phase of the sub-
woofer channels
push-button pressed: phase turned by 180°
push-button not pressed: normal phase
3 Control for the crossover frequency
4 Level control for the channels of the satellite
speakers
5 POWER switch
6 Power LED
7 Mains cable for connection to a mains socket
(230 V/ 50 Hz)

8 Groundlift switch

GND: the signal ground and the housing of
the unit are electrically connected
LIFT: the signal ground and the housing are
separated
9 Terminal screw for a ground connection, if
re quired (in case of hum noise problems)
10 Output to connect an amplifier for a single
mono subwoofer (the bass range of the left and
right channels is radiated via one subwoofer)
11 Outputs of the left and right channels to con-
nect an amplifier for the satellite speakers
12 Outputs of the left and right channels to con-
nect an amplifier for two subwoofers (sepa-
rate bass reproduction of the left and right
channels)
13 Inputs of the left and right channels to connect
the signal source (e . g . preamplifier, mixer)
2 Safety Notes
The unit corresponds to all relevant directives of the
EU and is therefore marked with
WARNING The unit uses dangerous mains
voltage . Leave servicing to skilled
personnel only . Inexpert handling or
modification of the unit may result
in electric shock .
•
The unit is suitable for indoor use only . Protect
it against dripping water and splash water, high
humidity, and heat (ambient temperature range
0 – 40 °C) .
•
Do not place any vessels filled with liquid, e . g .
drinking glasses, on the unit .
•
Immediately disconnect the unit from the mains
socket
1 . if there is visible damage to the unit or to the
mains cable,
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 .
•
A damaged mains cable must be replaced by
skilled personnel only .
•
Never pull the mains cable to disconnect the
mains plug from the mains socket, always seize
the plug .
•
Use a dry dust cloth only for cleaning; never use
chemicals or water .
•
No guarantee claims for the unit and no liability
for any resulting personal damage or material
dam age will be accepted if the unit is used for
other pur poses than originally intended, if it is
not correctly con nected or operated, or if it is
not repaired in an expert way .
•
Important for UK Customers!
The wires in this mains lead are coloured in
ac cordance 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 con-
nected to the terminal which is marked with
the letter N or coloured black .
2 . The wire which is coloured brown must be
con nected to the terminal which is marked
with the letter L or coloured red .
If the unit is to be put out of operation
definitively, take it to a local recycling
plant for disposal which is not harmful
to the environment .
3

Applications

The crossover network MCX-200 / SW allows to
split the frequency range for subwoofer / satellite
audio systems and can be used both for profes-
sional applications (e . g . stage, disco) and for home
applications .
The unit is designed for installation into a rack
(482 mm / 19") but can also be used as a table top
unit . For rack installation, 1 rack space (44 .45 mm)
is required .
4

Setting into Operation

4.1 Connecting the crossover network
Prior to connecting the units or to changing existing
connections, switch off the MCX-200 / SW and the
entire audio system . All inputs and outputs are de-
signed as unbalanced 6 .3 mm jacks .
1) Connect the output of the signal source (e . g .
.
preamplifier, mixer) to the INPUT (13) .
2) Connect the input of the amplifier for the sat-
ellite speakers to the outputs OUTPUT RIGHT/
LEFT SATELLITE (11) .
3) Connect the input of the amplifier for the sub-
woofer(s)
a to the MONO OUTPUT (10) if a single mono
subwoofer is set up (the bass range of the left
and right channels is radiated via one sub-
woofer) or
b to the outputs OUTPUT RIGHT/ LEFT SUB-
WOOFER (12) if two subwoofers are used
(for separate bass reproduction of the left
and right channels) .
4) Finally connect the plug of the mains cable (7)
to a mains socket (230 V/ 50 Hz) .

4.2 Making adjustments

1) Prior to switching on the crossover network for
the first time, turn the controls SUBWOOFER
OUTPUT (1) and SATELLITE OUTPUT (4) to mid-
position (they engage) and adjust the crossover
frequency .
2) Adjust the crossover frequency with the con-
trol CROSSOVER FREQUENCY (3) according
to the speakers used (see specifications of the
speak ers) . In most cases, shelf speakers and
small standing speakers are supplemented by a
subwoofer in an optimum way if the crossover
frequency is adjusted between 60 and 100 Hz .
The lower the crossover frequency, the more dif-
ficult the acoustic localization of the subwoofer .
OUTPUT RIGHT
MONO OUTPUT
GND LIFT
GND
SUBWOOFER SATELLITE
8 9 10 11
OUTPUT LEFT INPUT
SUBWOOFER SATELLITE SUBWOOFER RIGHT
12 13
The higher the crossover frequency, the more
powerful the bass support .
3) Switch on the MCX-200 / SW with the POWER
switch (5) – the power LED (6) lights up .
4) Switch on the entire audio system . To prevent
switching noise, always switch on the power
amplifiers last of all .
5) To adjust the output levels, first use the two
controls SUBWOOFER OUTPUT (1) and SATEL-
LITE OUTPUT (4) to adjust the connected power
amplifiers to an optimum level . As most power
amplifiers are pro vided with an input level con-
trol, make the adjustment alternately between
the crossover network and the power amplifiers .
Then adjust a natural or a deliberately am-
plified bass reproduction . If the reproduction of
the bass range is too poor, turn back the con-
trol SATELLITE OUTPUT accordingly . If the bass
reproduction is overemphasized, turn back the
control SUBWOOFER OUTPUT accordingly . (After
the power amplifiers have been adjusted to an
optimum level, never advance one of the controls
OUTPUT any further; otherwise, the correspond-
ing amplifier will be overloaded .)
6) When setting up the speakers, a different phase
between the sound waves of the subwoofer(s)
and of the satellite speakers can occur . To com-
pensate this, press the push-button SUB WOOFER
PHASE (2) alternately and determine the high-
est bass reproduction at the final place of hear-
ing . If necessary, reduce the bass reproduction
accordingly by means of the control SUBWOOFER
OUTPUT (1) .
4.3 Groundlift switch
If there is a ground loop after the audio units have
been installed (e . g . from the housing of the cross-
over network via a rack to another housing of a
unit), a hum noise occurs (to be heard especially
during music passages of low volume) . This ground
loop can be interrupted with the GROUNDLIFT
switch (8) at the rear panel of the unit . For this
purpose, slide the switch to the position LIFT . The
hum noise should stop then .
On the other hand, the amplifier is not shielded
against electric noise fields if the housing is not con-
nected to ground . In this case, slide the switch to
the position GND . In case of doubt, set the switch
alternately to find the optimum adjustment .
5 Specifications
Frequency range: � � � � � � � � �10 – 30 000 Hz, −0�5 dB
Crossover frequency: � � � � � �60 – 500 Hz
Slope: � � � � � � � � � � � � � � � � �12 dB / octave
High-pass filter: � � � � � � � � � �15 Hz, 12 dB / octave
THD: � � � � � � � � � � � � � � � � � �< 0�03 %
Input: � � � � � � � � � � � � � � � � �6�3 mm jacks, unbal�
max� input level: � � � � � � � �6 V (16 dBV)
impedance:� � � � � � � � � � � �56 kΩ
Outputs: � � � � � � � � � � � � � � �6�3 mm jacks, unbal�
output level: � � � � � � � � � � �±10 dB adjustable from
input level, max� 6 V
impedance:� � � � � � � � � � � �100 Ω
S / N ratio: � � � � � � � � � � � � � �> 80 dB
Power supply: � � � � � � � � � � �230 V/ 50 Hz / 5 VA
Dimensions (W × H × D): � � �482 × 44�5 × 185 mm, 1 RS
Weight: � � � � � � � � � � � � � � � �2 kg
Subject to technical modification .
All rights reserved by MONACOR INTERNATIONAL GmbH
®
& Co. KG. No part of this instruction manual may be repro­
duced in any form or by any means for any commercial use.
LEFT
5