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About The Equipment - Bosch LBB 1920 Installation And Operating Manual

Plena universal pre-amplifier
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Plena Universal Pre-amplifier | Installation and Operating Manual |
1

About the equipment

1mV
Bal.input
S101
1/Line
200mV
XLR
P.S.
200mV
1mV
Bal.input
S102
2/Line
200mV
XLR
P.S.
200mV
1mV
Bal.input
S103
3/Line
200mV
XLR
P.S.
200mV
1mV
Bal.input
S104
4/Line
200mV
XLR
P.S.
200mV
Figure 1.1
The Plena Universal Amplifier is a mono mixer amplifier with 4 input channels. Each channel has 3 possible input
connections and a direct XLR output. You can adjust volume and tone level for each channel. The 4 input channels
and the cascade input are mixed to one master signal. This master signal is available on the XLR and DIN output
(mic. level). Additional outputs are the tape out and cascade out.
All pre-amplifier channels and the master output can be monitored with a headphone.
Bosch Security Systems | 2003-09 | 3922 988 99482en
JP102
A
Speech filter
Tone
Mic.
JP101
Aux
ON/OFF
JP104
B
Speech filter
Tone
Mic.
JP103
Aux
ON/OFF
C
JP106
Tone
Speech filter
Mic.
JP105
Aux
ON/OFF
JP108
D
Tone
Speech filter
Mic.
JP107
Aux
ON/OFF
115/230V
F1
24V DC
About the equipment
Priority Mode
B/S JP109
Tel/EMG Override
Priority Control
JP111
1V
OFF
Balanced Direct Output
JP112
1V
OFF
Balanced Direct Output
JP113
1V
OFF
Blalanced Direct Output
JP114
1V
OFF
Blalanced Direct Output
Insertion
Cascade
S301B
2 (ON)
1 (OFF)
18V
JP301
F101
1A
Ins/Casc/EMG In
F102
DC Out
5-Pole Din
JP110
Pin 4
Over Ride
Pin 5
monitoring
1
2
A,B,C,D Master
3
4
3V
master
(350mV)
O
In/Case Out
Master
Cascade
S301A
Insertion
Master
Emergency
Level
Preset
VOX
DETECTOR
en | 7
Master Line Out
Master Mic. Out
VOX

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