10
en | Connection and indicators
PLENA power amplifiers
2018.11 | V1.2 | LBB193x/x0
Installation and operation manual
Bosch Security Systems B.V.
12
11
10
9
14
15
17
16
18
19
20
Figure
5.3: LBB1938/30
Apparatus
delivered
connectored
for 230V~
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
100V
0
Slave Input 100V
+
+
-
-
Rated input
Power : 1600VA
Off On
Main Power
Battery
Input
Fault Relays' Output
NO COM NC
Off On
NO COM NC
NO COM NC
Battery
Detection
Pilot-tone
Detector
Input
Input
Input
Output
Input 2-Progr
Power
am
Input 1-Pr iority
Input 1
Priority
Slave Input
100V
Input 2
Enable
100V
0
2..24V
Default Off
GND 2..24V
Default On
GND
24V DC In
Priority Only
No Priority
100V
100V
0V
0V
Priority Controlled Output
100V
70V
0
0
8
Direct O utput
100V
0
70V
0
8ohm
100V/70V
Selection (12A)
Priority Only
0
0
No Priority
Priority
F
7
0
1
F
7
0
2
14
15
17
18
19
20
16
1
2
3
5
6
4
7
9
12
11
10
8
Figure
5.4: LBB1938/70
Note that slight deviations from the rear panel layout shown may occur.
1.
Priority line
input 1 (XLR/balanced)
2.
Level control
input 1
3.
Priority loopthrough
output
1 (XLR/balanced)
4.
Program line
input 2 (XLR/balanced)
5.
Level control
input 2
6.
Program loopthrough
output 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)
12.
ON - OFF switch
13.
Voltage selector
(Not on LBB1938/x0)
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
