Bosch Plena - External Power Amplifiers

External power amplifiers
The voice alarm router has 2 external power amplifier outputs (line level, 1 V) and 1 external
power amplifier input (100 V) to connect two external power amplifiers. The function of the
external power amplifier (e.g. a Plena Power Amplifier) depends on the channel mode for
which the system is configured (see section 1-Channel mode operation, page 77 and section
2-Channel mode operation, page 78).
See the next information about connecting external power amplifier 1 to a voice alarm router:
Design & Quality
The Netherlands
Amplifier 1
Out
GND
Amplifier 2
100V 70V 0 0
line in line out
1 2
3
1 2
3
GND GND+ +
- -
0V 0 100V 0 100V 70V 0 100V
TRG1 TRG2
NC
B
Failure
0V 0 100V 0 100V 0 +24V-
Booster 2 in
Z5 Z6
DC In
Z1
Z2
Z3
Figure 5.21: Connecting external power amplifier 1
See the next information about connecting external power amplifier 2 to a voice alarm router:
5.2.5
Plena Connection | en 67
Bosch Security Systems B.V. Installation and Operation manual 2013.07 | V2.0 |