Bosch LBB 1903/10 User Manual
Bosch Security Systems | 2003-09 | 3922 988 92883en
Plena Mixer Amplifier | Installation and Operating Manual |
en | 10
2
Internal settings
Figure 2.1
Figure 2.2
2.1 Setting the VOX for microphone input 1
Input 1 has the option of a voice-controlled priority (VOX), which will overrule all other inputs when it recognizes
a voice signal. To activate this function, set the VOX-jumper (JP406) to ON.
a voice signal. To activate this function, set the VOX-jumper (JP406) to ON.
2.2 Setting the speech filters
The speech intelligibility can be improved by cutting off the lower frequencies of the signal. To activate this filter for
each microphone input, set the respective filter jumper (JP401 for input 1, JP402 for input 2, JP403 for input 3 and
JP405 for input 4) to ON.
each microphone input, set the respective filter jumper (JP401 for input 1, JP402 for input 2, JP403 for input 3 and
JP405 for input 4) to ON.
Internal settings
Mic. 1
Mic. 2
Mic. 3
Mic. 4
VOX
OFF
ON
1
2
3
1
2
3
70V
JP802
LBB1903/10
LBB1906/10
LBB1912/10
100V
1
2
3
1
2
3
JP
40
5
JP
403
JP
40
2
JP40
1
1
VR401
JP
80
2
70V
100V
JP
40
6
Mic. 1
Mic. 2
Mic. 3
Mic. 4
VOX
JP
40
5
JP
40
3
JP
40
2
JP
40
1
JP
40
6
Mic. 1
Mic. 2
Mic. 3
Mic. 4
VOX
OFF
ON
1
2
3
1
2
3
70V/100V
8 Ohm
1
2
3
1
2
3
JP
40
5
JP
40
3
JP
402
JP
40
1
JP90
2
JP
40
6
Mic. 1
Mic. 2
Mic. 3
Mic. 4
VOX
JP
40
5
JP
40
3
JP
40
2
JP
40
1
JP
40
6
70V
100V
1
2
3
1
2
3
JP
90
1
LBB1914/10
JP902
JP901
VR401