Connecting The Amplifier - Monacor PA-1200 Mode D'emploi

5 Connecting the Amplifier

All connections should only be made by special-
ized personnel and in any case with the amplifier
switched off!
5.1 Speakers
1) For connecting the speakers screw off the pro-
tective cover (22) . The connecting possibilities
for the speakers are shown in the figures 3 to 9 .
2) Either connect 70 V or 100 V speakers for the
four PA zones to the terminals Z 1 – Z4 (26)
and COM (24); a total load of 120 W RMS by
the speakers must not be exceeded, otherwise
the amplifier will be damaged . Set the selector
switch IMPEDANCE (27) to the corresponding
position (70 V or 100 V) .
Or connect a speaker group with a total im-
pedance of at least 4 Ω or 8 Ω to the terminals
4 Ω or 8 Ω (25) and COM (24) accordingly .
3) When connecting, always observe the correct
polarity . The terminal COM is always the neg-
ative pole . The positive pole of the speaker
cables is especially marked .
WARNING During operation there is a danger-
ously high voltage up to 100 V at
the terminals Z 1 – Z4 (26) . There is
a shock hazard . After the connec-
tion screw down the cover (22) in any case so
that it is not possible to touch the contacts
accidentally .
5.2 Inputs
Microphone for announcements
jack (8) on the front panel
Further microphones
XLR jacks* CH 2 and CH 3 (21) and CH 4 (33)
Set the line / microphone selector switches (32
and 34) to position MIC .
When connecting phantom-powered micro-
phones to the channels CH 2 and CH 3, switch
on the 15 V supply voltage with the corre-
sponding DIP switch PHANTOM POWER (35) .
Caution! Only actuate the switch with the am-
plifier switched off (switching noise) . With the
phantom voltage switched on, no microphone
with unbalanced output must be connected to
the corresponding input as this microphone
may be damaged .
Unit with line output (e . g . tuner, CD player, etc .)
XLR jacks* CH 2 and CH 3 (21) and
chinch jacks (30 and 31)
Set the line / microphone and line / phono selec-
tor switches (29, 32, 34) to position LINE .
The XLR jacks are balanced, but they can also
be connected in an unbalanced way . For this
purpose connect the pins 1 (ground) and 3 at
the XLR plug . The pin configuration is shown
in fig . 10 .
Turntable
RCA jacks (30)
Set the line / phono selector switch (29) to
position PHONO .
Switchboard to be able to pass on announce-
ments from this switchboard via the PA system
(with automatic volume attenuation of all other
inputs)
connection terminals TEL IN (20) for signals
with line level
* The balanced XLR jacks (21 und 33) should be used
preferably because a balanced signal transfer offers
the best interfer ence suppression, especially with long
connection cables .
5.3 Outputs
Further amplifier for large PA systems
6 .3 mm jack PRE AMP OUT (28)
Here the complete mixed signal is available, the
volume is independent of control MASTER (13) .
5.4 Additional chime button
To be able to activate the chime remotely from the
amplifier, connections for a momentary push-but-
ton are provided . Connect the momentary
push-button to the terminals CHIME REMOTE (19) .
5.5 Power supply and
emergency power supply
1) For continuous operation of the amplifier in case
of a possible mains failure, connect the termi-
nals 24 V ⎓ (23) to a 24 V emergency power
supply unit (e . g . PA-24ESP from MONACOR) .
Note: If the 24 V voltage from the emergency power
supply unit is present at the terminal 24 V ⎓ , the am-
plifier cannot be switched off with the mains switch
(14) . In case of mains failure or if it is switched off, it
automatically switches to emergency power supply .
2) Finally connect the supplied mains cable to
the mains jack (15) first and then to a mains
socket (230 V/ 50 Hz) .
6 Operation
6.1 Switching-on and
mixing the channels
1) Prior to switching-on, set the control MAS-
TER (13) to zero to prevent switching noise .
Then switch on the amplifier with the button
POWER (14) . The red LED ON (7) lights up as
an operational check .
2) Switch on the desired speaker groups with the
switches SPEAKER SELECTOR (5) .
3) Turn up the control MASTER (13) so far that the
further adjustments can be heard well .
4) With the mixing controls CH 1 (9), CH 2 to CH 4
(10), CH 5 (11), and possibly with the control of
the installed insertion, adjust the volume of the
individual channels among each other . Always
turn to zero the controls of the channels which
are not used .
5) Adjust the sound with the controls BASS and
TREBLE (12) . If an insertion is installed, the
sound for it can additionally be changed with
the controls "Bass Pack Treble" (3) .
6) Adjust the definitive volume with the control
MASTER (13) . If necessary, correct the adjust-
ment with the mixing and sound controls . If the
red LED "+2" of the level indication (6) lights
up, slightly turn back the control MASTER .
6.2 Volume attenuation with
microphone announcements
To improve the intelligibility of announcements via
the channel CH 1, the volume of the other chan-
nels can automatically be attenuated when talking
into the microphone of channel CH 1 . Adjust with
the control MUTE (36) to which extent the volume
of the other channels is to be attenuated in case
of an announcement:
control at the left stop
no volume attenuation
control at the right stop
maximum volume attenuation
6.3 Chime / alarm siren
1) Prior to an announcement it is possible to
activate the chime with the button CHIME (2)
or with a button additionally connected (to the
terminals 19), if necessary . If the chime sounds,
the volume of all channels is reduced, however,
not the volume of channel CH 1 .
2) The alarm siren can be switched on and off
with one of the two buttons SIREN (4):
button ~ for howling siren
button − for continuous siren
As long as the siren sounds, all channels are
muted, however, not channel CH 1 .
6.3.1 Switching over between 2-tone chime
and 4-tone chime
A jumper in the amplifier allows selection of
2-tone chime or 4-tone chime .
WARNING The chime must be switched over
by skilled personnel only . For this
purpose, the amplifier must be
opened . Always disconnect the
mains plug from the socket before opening
the amplifier, otherwise you will risk an electric
shock!
1) If an emergency power supply unit is con-
nected, disconnect it from the terminals
24 V ⎓ (23) to make sure that the amplifier is
definitely out of operation .
2) Unscrew the housing cover of the amplifier .
3) Use the jumper MS 1 on the main PCB [below
the two plug-in connections CN 5 (5-pole) and
CN 15 (2-pole)] to adjust:
position "2t" = 2-tone chime
position "4tone" = 4-tone chime
4) Screw on the housing cover again .
7 Specifications
Output power
Rated powver: � � � � � � � � � � �120 W
THD: � � � � � � � � � � � � � � � � �< 1 %
Total music power (P ): � � �170 W
max
Outputs
speakers: � � � � � � � � � � � � � � �1 × 4 Ω
1 × 8 Ω
4 × 70 V or 100 V
preamplifier: � � � � � � � � � � � � �1 V/ 1 kΩ
Inputs
CH 1 – 4 (Mic): � � � � � � � � � � �1�5 mV/600 Ω
(for low impedance
microphones)
CH 2 – 5 (Line): � � � � � � � � � � �150 mV/ 47 kΩ
CH 5 (Phono): � � � � � � � � � � � �1 mV/ 47 kΩ (RIAA)
Frequency range: � � � � � � � � � � �80 – 15 000 Hz
Tone control (mixed signal)
bass: � � � � � � � � � � � � � � � � � �±10 dB / 100 Hz
treble: � � � � � � � � � � � � � � � � �±10 dB / 10 kHz
S / N ratio
MIC: � � � � � � � � � � � � � � � � � � �> 60 dB
LINE: � � � � � � � � � � � � � � � � � �> 70 dB
Power supply
mains voltage: � � � � � � � � � � �230 V/ 50 Hz
power consumption: � � � � � � �280 VA
emergency power supply: � � � ⎓ 24 V/ 11 A
Ambient temperature: � � � � � � �0 – 40 °C
Dimensions (W × H × D): � � � �420 × 122 × 350 mm
Weight: � � � � � � � � � � � � � � � � � �13 kg
Subject to technical modifications .
All rights reserved by MONACOR
GmbH & Co. KG. No part of this instruction manual
may be reproduced in any form or by any means for
any commercial use.
® INTERNATIONAL
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