Monacor PA-1200, Instruction Manual

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6
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PA Mixing Amplifier for 4 Zones
These instructions are intended for installers
of PA systems (chapters 4 and 5) and for users
without any specific technical knowledge (chap-
ter 6) . Please read the instructions carefully prior
to operation and keep them for later reference .
All operating elements and connections described
can be found on the fold-out page 3 .
1 Overview
1.1 Front panel
1 Cover for the insertion compartment;
here an insertion from MONACOR can be in-
stalled, e . g . tuner, CD player, digital message
memory, see chapter 3
2 Chime button
3 Tone controls for a unit inserted into the com-
partment (1)
4 Buttons for continuous alarm
button ~ for howling siren
button − for continuous siren
5 Buttons for switching on and off the four
speaker groups (zones) which are connected
to the screw connections SP 1 to 4 (26)
6 Level indication for the output signal
7 Power LED ON
8 6 .3 mm jack (bal .) for a microphone (channel 1)
9 Mixing control for the microphone channel 1
10 Mixing controls for the line / microphone chan-
nels 2 to 4
11 Mixing control for the phono / line channel
(channel 5)
12 Tone controls BASS and TREBLE for the mixing
signal
13 Control MASTER for the total volume
14 On / off switch POWER
Note: If a 24 V voltage from an emergency power
unit is present at the terminals DC POWER (23), the
amplifier cannot be switched off .
1.2 Rear panel
15 Jack for the supplied mains cable for connec-
tion to a mains socket 230 V/ 50 Hz
16 Mains fuse
Only replace a blown fuse by one of the same
type .
17 Cover plate, will be replaced by a connection
plate when an insertion is installed
18 Connection terminals M .O .H . for the tuner
output signal (can only be used with the tuner
inserted)
19 Connection terminals CHIME REMOTE for
an additional chime button (momentary
push-button)
20 Connection terminals TEL IN: Line level input
for a switchboard to be able to pass on an-
nouncements from this switchboard via the
PA system (with automatic volume attenuation
of all other inputs)
21 Balanced inputs for the line / microphone chan-
nels 2 and 3 via XLR jack
22 Protective cover for the screw terminals
WARNING Never operate the amplifier
without cover . Otherwise there
is a shock hazard when touch-
ing the connections .
23
Connections DC POWER for a 24 V emergency
power supply unit
24 Common ground connection COM for all
speakers
25
Screw connections for the 4 Ω and 8 Ω
speakers
26 Screw connections SP 1 to 4 for PA speakers
with 70 V or 100 V audio transformer
27 Selector switch IMPEDANCE for the speaker
outputs SP 1 to 4 (26)
position 70 V for PA speakers with 70 V audio
transformer
position 100 V for PA speakers with 100 V
audio transformer
28 6 .3 mm mono jack PRE AMP OUT/AMP IN, can
be used as an output or input:
output for the complete mixing signal,
independ ent of control MASTER (13), e . g . to
connect another amplifier
input for a line signal which is to be fed di-
rectly to the power amplifier; only the volume
of the signal can be influenced with the control
MASTER (13)
29 Line / phono selector switch for the phono / line
channel 5
30 Chinch input jacks for the phono / line chan-
nel 5
31 Line input for channel 4 (e . g . for tuner, CD
player, tape recorder, etc .)
32 Selector switch for channel 4
LINE The chinch jacks (31) for a unit with line
output are selected
MIC The XLR jack (33) for a microphone is
se lected
33 Microphone input for channel 4 (bal .)
34 Line / microphone selector switch for channels
2 and 3
35 DIP switches for switching on the 15 V supply
voltage for a phantom-powered microphone;
each for the inputs CH 2 and CH 3
Caution! Only actuate the switches with
the amplifier 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 .
36 Control MUTE to adjust to which extent the
volume of the other channels is to be atten-
uated in case of an announcement via micro-
phone channel 1
control at the left stop no volume attenua-
tion
control at the right stop maximum volume
attenuation
2 Safety Notes
The unit corresponds to all relevant directives of
the EU and is therefore marked with .
WARNING
The unit is supplied with hazard-
ous mains voltage . Never make any
modification on the unit and do
not insert anything through the air
vents! This may cause an electric
shock hazard .
•
The unit is suitable for indoor use only . Protect
it against dripping water and splash water, high
air humidity, and heat (admissible ambient tem-
perature range 0 – 40 °C) .
•
Do not place any vessels filled with liquid, e . g .
drinking glasses, on the unit .
•
The heat generated within the unit must be
carried off by air circulation . Therefore, do not
cover the air vents of the housing with any
objects .
•
Do not operate the unit or immediately discon-
nect the plug from the mains socket
1 . if there is visible damage to the unit or to
its 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 .
•
Never pull the mains cable to disconnect the
mains plug from the mains socket, always seize
the plug .
•
For cleaning only use a dry, soft cloth, by no
means chemicals or water .
•
No guarantee claims for the unit and no liability
for any resulting personal damage or material
damage will be accepted if the unit is used for
other purposes than originally intended, if it
is not correctly connected, operated, or not
repaired in an expert way .
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 .
3 Applications and Accessories
The amplifier PA-1200 is designed to set up a
PA system for general PA applications . The differ-
ent screw terminals (25 and 26) allow to connect
different speaker combinations (see figs . 3 to 9) .
PA speakers with 70 V or 100 V transformer can
be split to four PA zones which can separately be
switched on and off .
The five input channels to be mixed with each
other allow to connect microphones (channels 1
to 4), units with line level (channels 2 to 5), or a
turntable (channel 5) .
One of the following insertions from MONACOR
can be placed in the extension compartment (1):
PA-1120DMT digital message memory with timer
PA-1140RCD radio / CD player
PA-1200C timer
PA-1200RDSU AM / FM radio with audio player
For this purpose screw off the cover plate (1) so
that the desired module can be placed into the
insertion compartment .
4 Setting-up
The unit is provided for insertion into a rack
(482 mm / 19”), but it can also be used as a table
top unit . In each case air must be allowed to move
freely through all vents so that there is no heat
accumulation within the unit .
For inserting the amplifier into a rack, the
mount ing frame PA-1200RM from MONACOR is
required . There should be enough space above
and below the amplifier so that a sufficient ven-
tilation is ensured . To prevent the rack from be-
coming top-heavy, the amplifier must be placed
in the lower area of the rack .