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Plena Power Amplifier | Installation and User Instructions | Amplifiers
3.2.2
Rear panel connectors and
indicators
See figure 3.2 for an overview of the controls,
connections and indicators:
1 Priority line - input 1 (XLR/balanced)
2 Level control - input 1
3 Line loopthrough 1 (XLR/balanced)
4 Program line - input 2 (XLR/balanced)
5 Level control - input 2
6 Line loopthrough 2 (XLR/balanced)
7 Priority controlled loudspeaker output
terminals
8 24 Vdc power supply terminals
9 Earth connection screw
10 Mains fuse (T10A)
11 Mains connector (3-pole)
figure 3.2: Rear panel LBB1930/20, LBB1935/20
Bosch Security Systems | 2006-11 | 9922 141 50751en
20
19
18
Input 2
Input 1
Slave Input
Priority
Enable
100V
LBB 1 938/10
8900 193 81001
Plena 480W P ower Amplifier
Max. output power 720W
Rated output power 180W
A035413
230V~,50/60Hz
N663
S/N.
NL-4827HG-10
Design & Quality
The Netherlands
Input 1 Priority
Loopthrough 1
2..24V
GND 2..24V
GND
100V
0
Input 2 Program
Default Off
Default On
Loopthrough 2
Input 1-Priority
Input 1 Priority
+
2...24V- Input 1
-
0V- Input 2
Input 2 Enable
+
2..24V- Enable
-
0V- Mute
S lave Input 100V
100V
0
Input
1
2
3
12 ON - OFF switch
13 Voltage selector
14 Loudspeaker direct output terminals
15 Battery detection
16 Fault relay output
17 Pilot-Tone detection
18 100 V slave input terminals
19 Input 2 enable control terminals
20 Input 1 priority control terminals
17
16
15
14
Fault Relays' Output
Input
Battery
Main Power
Pilot-tone
Battery
Detector
Detection
Off On
Off On
NO COM NC
NO COM NC NO COM NC
Direct O utput
100V
0
70V
Input 2-Program
Priority Controlled Output
100V
0
Input
Priority Only
4
5
6
7
13
Apparatus delivered
connectored for 230V~
Power
230V~
240V~
Rated input
100V
Power : 1600VA
0
70V
0
8ohm
0
8
100V/70V
S election (12A)
Priority Only
0
No Priority
0
Priority
24V D C In
1 00V
0
No Priority
8
9
en | 10
12
11
10
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