Table Of Contents - Bosch LBB 1903/10 Installation And Operating Manual

Plena Mixer Amplifier | Installation and Operating Manual | Table of contents

Table of contents

Important safeguards..........................................................................................................................................................3
About this manual ..............................................................................................................................................................4
Safety precautions...............................................................................................................................................................4
Table of contents ................................................................................................................................................................5
1 About the mixer amplifier ................................................................................................................................................7
1.1 Controls and connections (front) .............................................................................................................................8
1.2 Controls and connections (rear) ..............................................................................................................................9
2 Internal settings ................................................................................................................................................................10
2.1 Setting the VOX for microphone input 1 ............................................................................................................10
2.2 Setting the speech filters .........................................................................................................................................10
2.3 Setting the chime volume ......................................................................................................................................11
2.4 Setting the output voltage for LBB1903, LBB1906 and LBB1912 ....................................................................11
2.5 Setting the output voltage for LBB1914 ...............................................................................................................11
3 Installation in rack ...........................................................................................................................................................12
4 External settings and connections .................................................................................................................................13
4.1 Connect the DC supply (battery) ..........................................................................................................................13
4.2 Priority microphone ...............................................................................................................................................13
4.3 Chime ON/OFF-switch .........................................................................................................................................14
4.4 Microphone inputs ..................................................................................................................................................15
4.5 Emergency input .....................................................................................................................................................15
4.6 Music source inputs ................................................................................................................................................16
4.7 Connecting the line output ....................................................................................................................................16
4.8 Connecting loudspeakers .......................................................................................................................................17
4.8.1 Constant voltage loudspeakers .........................................................................................................................17
4.8.2 Low impedance loudspeakers ..........................................................................................................................18
4.9 Mains connection ....................................................................................................................................................18
5 Operation of mixer amplifier .........................................................................................................................................19
5.1 Source selection .......................................................................................................................................................19
5.2 Volume and tone control .......................................................................................................................................19
5.3 Zone selection (LBB1914/10 only) .......................................................................................................................19
6 Technical data ..................................................................................................................................................................20
6.1 Electrical ..................................................................................................................................................................20
6.2 Performance ............................................................................................................................................................20
6.3 Inputs ........................................................................................................................................................................20
6.4 Outputs .....................................................................................................................................................................21
6.5 Environmental conditions ......................................................................................................................................21
6.6 General .....................................................................................................................................................................22
Bosch Security Systems | 2003-09 | 3922 988 92883en
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