Bosch LBB 1920 - Front Panel Controls; Front Panel Layout; Rear Panel Connections; Rear Panel Layout

Bosch Security Systems | 2003-09 | 3922 988 99482en
Plena Universal Pre-amplifier | Installation and Operating Manual | en | 8
1.1 Controls and connections (front)
Figure 1.2
1.2 Controls and connections (rear)
Figure 1.3
0dB
-6 dB
-20 dB
Power
1/Line 2/Line 3/Line 4/Line
Master
0
Master
Select
1
2
3
4
5
1
2
3
4
5 5 5 6 7 8
4 4 4
Plena Universal Pre-amplifier
1 VU meter (LED bar)
2 Power on indication LED (green)
3 Power on/off
4 Tone control, channel 1 to 4
5 Volume, channel 1 to 4
6 Master volume
7 Channel selection for headphone
8 Headphone connection
About the equipment
3
1-
45
3
1/Line 2/Line
3/Line
1-
45
115V 230V
Apparatus delivired
connected for 230V-
This apparatus must be earthed
Warning
3
1
+
-
2
GND
3
2
+
-
1
GND
Dir.Out1 Dir.Out2 Dir.Out3 Dir.Out4 Ins/ Casc / Emgln Ins/ Casc Out Master Line Out Master Mic. Out
Rated input
power: 25VA
T0,5AL250V
4/Line
3
1-
4
Ins/Casc
5
EMG Out
3
1-
45
3
1-
L
R
+24V- +24V-
45
LBB 1920/00
8900 192 00005
115/230V~,50/60Hz
No.
DC In DC Out
3 1
5
2
4
9
2
3 1 2 3 3 1 2 3 45 76 8211
9 9 9 10 11 12 13 14 15
16
17
1 DIN (priority) input, channel 1 to 4
2 XLR input, channel 1 to 4
3 Cinch input, channel 1 to 4
4 Tape output (Cinch)
5 Earth connection screw
6 Emergency relay output (terminal
7 24 V DC backup power input (terminal
8 24 V DC output (terminal)
9 XLR for direct output, channel 1 to 4
10 Insertion/ cascade switch
11 Insertion/ cascade / emergency input
12 Insertion/ cascade output
13 Master Line output (XLR)
14 Master Mic output (DIN, priority)
15 Mains voltage 115/ 230 V switch
16 Mains socket
17 Mains fuse