Bosch Appliances LBB 1906/10, LBB 1912/10 Internal settings, Setting the VOX for microphone input

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Plena Mixer Amplifier Installation and Operating Manual Internal settings

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2Internal settings

 

 

 

 

 

 

 

 

 

 

 

 

Mic. 3

 

 

JP402

JP401

 

 

 

 

 

 

 

 

 

 

 

 

Mic. 4

 

 

 

 

VOX

 

 

 

 

 

 

 

 

 

 

 

 

 

JP403

 

 

JP406

 

 

 

 

 

JP802

70V

 

 

 

 

JP405

 

 

 

Mic. 2

Mic. 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100V

 

 

 

 

 

 

 

 

 

1

2

3

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

70V

 

 

100V

 

 

Mic. 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mic. 4

 

JP402

JP401

VOX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JP802

 

 

JP405

JP403

JP406

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mic. 2

Mic. 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LBB1903/10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LBB1906/10

 

 

 

 

 

VR401

1

2

3

1

2

3

 

 

 

LBB1912/10

 

 

 

 

 

 

 

OFF

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2.1

 

 

 

 

 

 

 

 

 

 

 

Mic. 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mic. 4

 

 

 

 

 

JP402

JP401

VOX

 

 

 

 

 

 

 

 

 

 

 

 

JP403

 

 

 

JP406

 

 

 

 

 

 

 

 

 

 

JP405

 

 

 

 

Mic. 2

Mic. 1

 

 

 

 

 

 

JP902

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mic. 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mic. 4

 

JP402

JP401

VOX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JP405

JP403

JP406

 

 

 

 

 

 

 

 

1

2

3

1

2

3

 

 

Mic. 2

Mic. 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

70V/100V

8 Ohm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JP902

 

 

 

 

 

 

VR401

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

ON

 

 

 

 

LBB1914/10

 

 

 

 

 

JP901

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

 

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

100V

 

 

 

70V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JP901

 

 

 

 

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.

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.

Bosch Security Systems 2003-09 3922 988 92883en

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Contents Plena Mixer Amplifier Page Important safeguards Safety precautions About this manualTable of contents Bosch Security Systems 2003-09 3922 988 92883en Phantom Power About the mixer amplifierControls and connections front Controls and connections rear Setting the VOX for microphone input Internal settingsSetting the speech filters Setting the output voltage for LBB1903, LBB1906 and LBB1912 Setting the chime volumeSetting the output voltage for LBB1914 Installation in rack Connect the DC supply battery External settings and connectionsPriority microphone Chime ON/OFF-switch 115V/230VMicrophone inputs Emergency inputConnecting the line output Music source inputsConnecting loudspeakers LBB1912/10Mains connection 2Low impedance loudspeakersSource selection Volume and tone controlOperation of mixer amplifier Zone selection LBB1914/10 onlyPerformance Technical dataElectrical InputsOutputs Environmental conditionsGeneral Page For more information visit