Bosch Appliances LBB 1903/10, LBB 1912/10 manual Operation of mixer amplifier, Source selection

Plena Mixer Amplifier Installation and Operating Manual Operation of mixer amplifier

en 19

5Operation of mixer amplifier

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

Figure 4.6

Use the supplied mains cord to connect the system to the mains supply.

1 5 6 7 10 11 12 13

Figure 5.1

5.1 Source selection

•Use the music source selector (8) to select one of the connected music sources.

•Use the input volume controls (3, 4, 5, 6 and 7) to balance the sound level of the microphone inputs and the background music.

5.2 Volume and tone control

•Use the master volume control (11) to control the volume of the music/microphone mix.

•The treble and bass tone controls (9 and 10) affect the microphones as well as the music.

5.3 Zone selection (LBB1914/10 only)

•Use the zone selection buttons (12 and 13) to route the music/microphone mix from the amplifier output to loudspeaker zone 1 and/or loudspeaker zone 2. Priority announcements, however, are always routed to both zones, irrespective of the position of the zone selection buttons.

Bosch Security Systems 2003-09 3922 988 92883en