10 en | Introduction PLENA Mixer amplifier, 4-zone, 240W
2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
3.4.2 Rear panel
-
1 2 3 4 10 125 6 7 8 9 11
13
0
Emergency/Telephone
Rated input power 360W
Cal l
Duck in g
L
R
Aux2
Aux1
+
-
Gnd
Line O ut
Z1
Z2
Z3
Z4
24V
DC out
Prio ri ty
0
100V
+
0
100V
0
100V
0
100V
T4.
0
L 250V
230220
-
V~5 Hz
Gnd
Number Description
1 Telephone / 100V emergency input volume control knob - from -20 dB to 0 dB.
2 Telephone / 100V emergency input, with Euro style pluggable screw terminal
connector. This input has the highest priority amongst all inputs.
100V emergency input shall be connected to pins marked as 100V and 0V;
telephone signal (through coupler) shall be connected to +,Gnd, -.
3 DIP switch for microphone/line 1 with selection for: line/mic level, chime tone
on/off, phantom power (24V), and PTT (push to talk).
4 Microphone/line 1 input, with 5-pin Euro style pluggable screw terminal
connector. Balanced mic/line input (3 pins), remaining 2 pins for trigger input, if
these two pins are not connected this input will be mixed with other inputs
without priority.
5 Microphone 2 input, with combo (XLR +TRS) balanced signal input connector.
6 DIP switch for microphone 2 and 3 with selection for phantom power (18VDC).
7 Microphone 3 input, with combo (XLR +TRS) balanced signal input connector.
8 Ducking level control knob for microphone/line 1 input. It sets the required BGM
(background music) level when trigger (PTT) is active.
9 Aux-1 and 2: Music inputs with Cinch connector for a music source like a CD/DVD
player or radio. Stereo signals are converted into mono.
10 Line-out: Balanced line-level output (nominal level: 1V) for system expansion,
with 3-pin Euro style pluggable screw terminal connector.
11 Loudspeaker outputs:
– Zone 1 to 4 outputs, Euro style pluggable screw terminal connector - 100 V.
– 24V DC output for loudspeaker volume control override. It is activated when
there is a telephone or emergency input signal.
12 Earth connection screw.
13 Mains connector (3-pole) with fuse inside.
Notice!
The unit must be earthed.
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