External Power Amplifiers - Bosch Plena Voice Alarm System Installation And Operation Manual

58 en | Connection
5.2.5

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 6.1.4 and section 6.1.5 ).
See Figure 5.21 for information about connecting external power amplifier 1 to a voice alarm
router.
Figure 5.21 Connecting external power amplifier 1
See Figure 5.22 for information about connecting external power amplifier 2 to a voice alarm
router.
9922 141 1037x (V2.16) | V0.6 | 2011.09
LBB1992/00
De
0 100V 0 100V 70V 0 100V
Th
Out
0 100V 0 100V 0
GND
Z6 Booster 2 in
Amplifier 2
Amplifier 1
+ GND GND +
1 2 1 2
- -
3 3
line in line out
LBB1930/00
Installation and Operation manual
NC
Z1
Z2
+24V-
DC In TRG1 TRG2 B
100V 70V 0
Plena Voice Alarm System
Bosch Security Systems B.V.