Operation; Specifications - Monacor PA-900 Bedienungsanleitung

230 V~/50 Hz
USE ONLY WITH A 250V FUSE
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5 Connecting the PA Amplifier
All connections should only be made by skilled
personnel and with the amplifier switched off .
5.1 Speakers
It is possible to connect either PA speakers (figs .
1 and 2) or speakers /speaker groups with a
total impedance of at least 4 Ω (figs . 3 – 5), see
page 2 . Depending on the speaker type, use
the corresponding contacts of the terminal strip
OUTPUT (12) . The terminal strip can be removed
from its plug-in connection for better handling .
When connecting, observe the correct
individual or total impedance of the speakers
and their correct polarity (positive and negative
connections as shown in figs . 1 – 5) . The positive
connection of the speakers is always especially
coded .
Caution! With PA speakers with a 70 V or
100 V audio transformer (figs . 1 and 2), the
total load by the speak ers must not exceed
120 W RMS, otherwise the amplifier will be
overloaded and possibly damaged .
5.2 Microphones
Up to four microphones may be connected to
the inputs INPUT 1 to INPUT 4 (13) . Instead of
the XLR jack INPUT 1, also the terminals (18)
may be used .
1) When connecting a microphone, unlock the
corresponding switch MIC / LINE (17) .
2) For the jacks to which a phantom-powered
microphone is connected: Use the corre-
sponding DIP switch PHANTOM POWER (20)
to switch on the 20 V phantom power (switch
in the lower position) .
Caution! When the phantom power is
switched on, no unbalanced microphone
or audio unit must be connected to the
input; these units may be damaged .
5.3 Units with line output
Up to five units with a line output (e . g . CD
player, cas sette recorder) can be connected to
the inputs INPUT 1 to INPUT 4 (13) and to the
input AUX IN (16) . When connecting to the in-
puts INPUT 1 to INPUT 4, lock the corresponding
switch MIC / LINE (17) .
5.4 Inserting an equalizer or
another unit
For external effects on the sound, an equalizer,
for example, can be inserted via the jacks PRE
OUT and AMP IN (14) .
1) Remove the jumper between the connections
PRE OUT and AMP IN . Thus, the preamplifier
and the power amplifier are separated .
EMERGENCY OUTPUT
SUPPLY
24V
COM 4Ω 70V 100V
GND
10 11 12
2) Connect the input of the unit to the jack
PRE OUT .
3) Connect the output of the unit to the jack
AMP IN .
Note: The amplifier does not emit a signal if the
unit inserted is not switched on, if it is defective or
not correctly connected .
5.5 Additional amplifier
If the number of the required speakers is higher
than the number admissible for the amplifier,
an additional amplifier will be required (e . g .
MONACOR PA-900S) . Connect the input of the
additional amplifier to the jack LINE OUT (15) .
The output level of the jack is independent of
the control MASTER VOLUME (4) .
5.6 Power supply and
emergency power supply
For continued operation of the amplifier after a
possible mains failure, connect a 24 V emergency
power supply unit (e . g . MONACOR PA-24ESP) to
the terminal strip EMERGENCY SUPPLY (11) . The
terminal strip can be removed from its plug-in
connection for better handling . Finally connect
the supplied mains cable to the mains jack (8)
first and then to a mains socket (230V/ 50Hz) .
Notes:
1 . If the 24 V voltage from the emergency power
unit is available at the terminals EMERGENCY
SUPPLY, the amplifier cannot be switched off
with the switch POWER (7) . In case of a mains
failure or if it is switched off, the amplifier will
automatically switch to the emergency power
supply .
2 . With emergency power supply, the amplifier
will deliver less power than with mains supply .
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Operation

1) Prior to switching on the amplifier for the first
time, set the controls INPUT 1 to 4 (1) and
the controls AUX (2) and MASTER VOLUME
(4) to position "0" .
2) Switch on the amplifier with the POWER
switch (7) . After switching-on, the LED ON
(5) lights up .
3) Turn up the control MASTER VOLUME (4) so
that the next adjustments are audible .
4) Adjust the input controls INPUT 1 to 4 (1)
and the control AUX (2) to the desired value .
5) Adjust the tone controls BASS and TREBLE
(3) to optimum sound .
6) Adjust the total volume with the main control
MASTER VOLUME (4) . The 5-step LED row (6)
indicates the output level . For an optimum
level, adjust the control so that the red LED
+3 does not yet light up .
AUX IN
PRE OUT LINE OUT INPUT 4
L L
2 1
R R
3
MIC
AMP IN
LINE
13 14 15 16
INPUT 3 INPUT 2 INPUT 1
2 1 2 1 2 1
3 3
3
MIC MIC MIC
LINE LINE LINE
+ –
GND
17 18 19
6.1 Talkover function of channel 1
Via channel INPUT 1, announcements can be
made during a musical programme . Then the
volume of the other channels is automatically
attenuated by 40 dB . To switch on this function,
lock the button AUTOTALK (19) .
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Specifications

Rated power: . . . . . . . .120 W
Total music power: . . . . 160 W
Outputs
Speakers*: . . . . . . . . .min 4 Ω, 70 V, 100 V
Line Out: . . . . . . . . . .1 V/ 600 Ω
Pre Out: . . . . . . . . . . .1 V/ 600 Ω
Inputs
(sensitivity/ impedance; connection)
Input 1 – 4: . . . . . . . .Mic 3 mV/1 .1 kΩ
switchable to Line
200 mV/14 kΩ;
XLR, balanced
Aux: . . . . . . . . . . . . . .140 mV/ 50 kΩ;
RCA, unbalanced
Amp In: . . . . . . . . . . .1 V/14 kΩ;
RCA, unbalanced
Frequency range: . . . . .50 – 15 000 Hz, ±3 dB
THD: . . . . . . . . . . . . . . .0,5 %
S / N ratio: . . . . . . . . . . .> 80 dB
Tone control
Bass: . . . . . . . . . . . . . .±10 dB /100 Hz
Treble: . . . . . . . . . . . .±10 dB /10 kHz
Phantom power: . . . . . .+20 V
Ambient temperature: .0 – 40 °C
Power supply
Mains voltage: . . . . . .230 V/ 50 Hz
Power consumption: . .300 VA
Emergency
power supply: . . . . . . .⎓ 24 V/ 9 A
Dimensions
(W × H × D): . . . . . . . . .482 × 88 × 275 mm,
2 rack spaces
Weight: . . . . . . . . . . . .9 .9 kg
* Either use the 70 V and 100 V outputs or the 4 Ω
output!
Subject to technical modification .
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.
+21 V
PHANTOM
POWER
AUTO
TALK 4 3 2 1
OFF OFF
ON ON
20 ➆
® INTERNATIONAL
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