Operation; Operation Of Mixer Amplifier; Source Selection; Volume And Tone Control - Bosch PLN?2AIO120 BGM Installation And User Instructions Manual

Plena All-in-One 120 Watt | Installation and User Instructions | Operation
5

Operation

5. 1

Operation of mixer amplifier

The volume controls on the Plena All-in-One 120 Watt
are not motor driven. This means that when the volume
is adjusted using the volume keys on the remote control,
the volume controls on the system will remain in the
same position. In general, to set-up the system for the
optimum signal-to-noise ratio, the master volume on the
Plena All-in-One 120 Watt should be set to low, and the
volume plus key on the remote control should be used
to increase the volume.
5.1.1

Source selection

• Use the input volume controls (30, 28, 27 and 25) to
balance the sound level of the microphone inputs
and the background music.
• Use the music source selection button (26) to select
the built-in DVD-player/tuner or an auxiliary source.
If the auxiliary source is selected, the DVD-player
and the tuner are switched off. If the DVD-
player/tuner is selected, the DVD-player will be
active as long as it is playing. If the DVD-player
stops, the tuner will take over automatically.
1 2 3 4 5
Plena BGM/Paging System
Mode
0 dB
Eject
-6 dB
-20 dB
1
0
Power
31 30 29
figure 5. 1 : Front panel
Bosch Security Systems | 2008-09 | 9922 141 50762 en
6 7 8 9
2 Select
0
3
0
0
28 27 26 25
5.1.2

Volume and tone control

• Use the master volume control (22) to control the
volume of the music/microphone mix.
• The bass and treble tone controls (23 and 24) affect
the microphones as well as the music.
5.1.3

Zone selection

• Use the output attenuators (20 and 18) to balance the
sound level in zones 1 and 2, respectively.
• Use the zone selection buttons (21 and 19) to switch
a zone on or off. The priority microphone active
LED (17) indicates that a priority call is active. Such a
priority call overrides the zone selection and
attenuation settings. A priority call addresses all
zones with 0 dB attenuation.
DVD/Tuner
Aux
0
24 23 22
10 11 12
AM/FM
Scan
M1/6 M2/7 M3/8 M4/9 M5/0 Shift Memory
Zone 1 Zone 2
-9 -6 -9 -6
-12 -12
-3 -3
0dB 0dB
-15 -15
21 20 19 18
en | 21
13
14
15
16
17