Bosch Appliances LBB 1912/10, LBB 1914/10, LBB 1906/10, LBB 1903/10 Controls and connections front

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Plena Mixer Amplifier Installation and Operating Manual About the mixer amplifier

en 8

1.1 Controls and connections (front)

2

3

4

8

9

Only for LBB1914/10

Plena Mixer Amplifier

1

0dB -6 dB

-20 dB

2

Select

CD

AUX

Master

Zone 1

Zone 2

Power

3

4

Line

1

5

6

7

10

11

12

13

Figure 1.2

1 Power button

2VU-meter (LED's for -20, -6, 0 dB and Power ON)

3 Input 1 (microphone) volume control

4 Input 2 (microphone) volume control

5 Input 3 (microphone) volume control

6 Input 4 (microphone) volume control

7 Line (music source) volume control

8Music source selector (CD, tape, AUX)

9 Master tone control (treble)

10 Master tone control (bass)

11 Master volume control (all inputs except emergency)

12 Zone 1 selection button (LBB1914/10 only)

13 Zone 2 selection button (LBB1914/10 only)

Bosch Security Systems 2003-09 3922 988 92883en

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Contents Plena Mixer Amplifier Page Important safeguards Safety precautions About this manual Table 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 speech filters Internal settingsSetting the VOX for microphone input Setting the output voltage for LBB1914 Setting the chime volumeSetting the output voltage for LBB1903, LBB1906 and LBB1912 Installation in rack Priority microphone External settings and connectionsConnect the DC supply battery Chime ON/OFF-switch 115V/230VMicrophone inputs Emergency inputConnecting the line output Music source inputsConnecting loudspeakers LBB1912/10Mains connection 2Low impedance loudspeakersVolume and tone control Operation of mixer amplifierSource selection Zone selection LBB1914/10 onlyTechnical data ElectricalPerformance InputsOutputs Environmental conditionsGeneral Page For more information visit