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Plena Power Amplifiers
6.3
100V slave input
The power amplifiers have a 100V slave input (18) that can be connected to an existing 100V
loudspeaker line. In this way it is easy to connect an additional power amplifier on a remote
location for more output power. The 100V input is not affected by the control terminals for
input 1 priority (20) or input 2 enable (19).
Figure 6.3: 100 V slave input
Notice!
If the 100V slave input is used, and the 0V and 100V are incorrectly connected, no pilot tone
is detected on the power amplifier. Refer to section Input pilot tone, page 16, for more
information.
6.4
Constant voltage loudspeakers
The power amplifier can drive 100V constant voltage loudspeakers at full power (100V) or half
power (70V). Connect the loudspeakers in parallel and check the loudspeaker polarity for in-
phase connection. The summed loudspeaker power should not exceed the rated amplifier
power.
Bosch Security Systems B.V.
2. . 24V
G ND 2. . 24V
G ND
100V
0
LBB 1938/10
8900 193 81001
D e fa ult O
D e fa ult O n
Plena 480W P ower Ampli er
Max. output power 720W
Rated output power 180W
A035413
230V~,50/60Hz
S/N.
N663
NL-4827HG-10
Design & Quality
The Netherlands
Input 1 Priority
Loopthrough 1
Input 2 Program
Loopthrough 2
Input 1 Priority
+
2...24V- Input 1
-
0V- Input 2
Input 2 Enable
+
2..24V- Enable
-
0V- Mute
S lave Input 100V
100V
0
Installation and Operation manual
Input 2
Input 1
S lave Input
Fault Relays' Output
P riority
E na ble
100V
Pilot-tone
Detector
O On
NO COM NC
2. . 24V
G ND 2. . 24V
G ND
100V
0
D e fa ult O
D e fa ult O n
Input 1-P r iority
Input 2-P rogra m
Input
Input
External connections | en
Apparatus delivered
connectored for 230V~
Input
Battery
Main Power
230V~
240V~
Battery
Detection
O On
NO COM NC
NO COM NC
D ire ct O utput
100V
0
70V
0
8
Priority
Priority Controlled Output
24V DC In
100V
0
100V
0
Priority Only
No Priority
2014.01 | V1.1 | LBB193x/x0
13
Power
Rated input
100V
Power : 1600VA
0
70V
0
8ohm
100V/70V
S election (12A)
Priority Only
0
No Priority
0
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