Monacor PA ATT-442ST Manual De Instrucciones página 5

1 Operating Elements and Connections
(see page 2)
1 Button AMP for switching on and off all connected
speakers
2 Buttons for each speaker pair for selecting amplifi-
er A or B
3 Volume controls for the individual speaker pairs
4 Screw terminals* for the speakers
5 Screw terminals* for connection to the speaker out-
puts of amplifier A
6 Screw terminals* for connection to the speaker out-
puts of amplifier B
* For better handling, the screw terminals can be removed from their
plug-in connections.
2 Safety Notes
G
The unit is suitable for indoor use only. Protect it
against dripping water and splash water, high air
humidity, and heat (admissible ambient temperature
range 0 – 40 °C).
G
For cleaning only use a dry, soft cloth, by no means
chemicals or water.
G
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 connect -
ed, overloaded, operated, or not repaired in an
expert way.
If the unit is to be put out of operation defin i-
tively, take it to a local recycling plant for a
disposal which is not harmful to the environ-
ment.
3 Applications
The 4-zone stereo attenuator is especially designed for
use in audio systems so that different volumes can be
adjusted for different PA zones. The unit is inserted
between the stereo speaker outputs of the power ampli-
fier and the stereo speakers (impedance 4 – 16 Ω). It
is possible to connect two stereo amplifiers (max.
100 W per channel). The stereo signal of one of the
RMS
two amplifiers can separately be selected for each
speaker pair.
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be reproduced in any form or by any means for any commercial use.
® INTERNATIONAL GmbH & Co. KG. No part of this instruction manual may
4 Electrical Connection
If the amplifiers to be connected are switched on,
switch them off first!
1) For better handling, the connection terminals (4 to
6) can be removed from their plug-in connections.
When replugging them, observe that they are
plugged onto the correct pins!
2) Always connect the positive poles of the amplifier
outputs and speakers to the corresponding clamp-
ing contact "+" and the negative poles to "-".
3) The complete connection is shown in fig. 3. Con-
nect the speaker outputs of the amplifier to the
terminals FROM AMP A (5). If a second amplifier is
used, connect it to the terminals FROM AMP B (6).
4) Connect the speakers to the terminals TO SPKR 1
to TO SPKR 4 (4). It is also possible to use speak-
ers of different impedances (4 Ω to 16 Ω).
5 Operation
1) When setting the unit into operation for the first
time, turn all volume controls (3) to the left stop to
zero first before switching on the connected ampli-
fiers.
2) Depress the button AMP (1). Thus, all speakers are
switched on.
3) Select separately for each speaker pair with the
buttons A / B (2) which amplifier signal is to be repro-
duced.
4) Adjust the desired volume with the volume controls
(3) in each case.
5) For switching off all speakers, disengage the button
AMP (1).
6 Specifications
Frequency range: . . . . . 20 – 20 000 Hz
Input power rating: . . . . max. 100 W
Output power: . . . . . . . . max. 18 W
Speaker impedance: . . . 4 – 16 Ω
Ambient temperature: . . 0 – 40 °C
Dimensions: . . . . . . . . . 432 × 78 × 190 mm
Weight: . . . . . . . . . . . . . 3.4 kg
Subject to technical modification.
GB
per channel
RMS
per channel
RMS
5