Bosch LBB 1930, Installation And Operating Manual

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Bosch Security Systems | 2003-09 | 3922 988 92983en
Plena Booster Amplifier | Installation and Operating Manual | en | 9
1.2 Controls and connections (LBB1930, LBB1935 - rear)
Figure 1.5
1.3 Controls and connections (LBB1938 - rear)
Figure 1.6
230V- 240V-
100V 70V 0 0 8 - +
100V
100V
0V
Line fuse
250V T1A
Apparatus delivered
connected for 230V-
24V DC IN
line in
This apparatus must be earthed
Warning
line out
1 2
3
1 2
3
GND GND + +
- -
4 2 3 5 6 1 7
11
10
9
8
LBB1930
LBB1935
1 Level control
2 100 V / 0 V slave input terminal
3 Line input (XLR/balanced)
4 Line input (phone jack/balanced)
5 Line loopthrough (XLR/balanced)
6 Line loopthrough (phone jack/balanced)
7 Loudspeaker output terminals and 24 Vdc power
supply terminals
8 Earth connection screw
9 Mains fuse
LBB1930 T2.5A
LBB1935 T4A
10 Mains connector (3-pole)
11 Mains voltage switch 230/240 V
Input 1
Priority Slave Input
100V Input 2
Enable
100V 0
Priority Only No Priority
100V 70V 0 0 8
100V 100V 0 0
Direct O utput
Input Input
Input 2-Program Input 1-Pr iority
2..24V
Default Off GND 2..24V
Default On
GND
100V
0
70V
0
8ohm
100V/70V
Priority Only
0
0
No Priority
Priority
Inpu t 1 Priority
Loopthrough 1
Input 2 Program
Loopthrough 2
Input 1 Priority
2..24V-Input 1
0V-Inpu t 2
Inpu t 2 Enable
2..24V-Enable
0V-Mute
100V
0
Slave Input 100V
+
-
+
-
Priority ControlledO utput
2 3 4 5 6
12 13 14 15
8
9
10
11
1
LBB1938
7
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 Earth connection screw 9 24 Vdc power supply terminals
10 Mains fuse (T10A)
11 Mains connector (3-pole)
12 Loudspeaker direct output terminals
13 100 V slave input terminals
14 Input 2 enable control terminals
15 Input 1 priority control terminals
About the equipment