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Plena BGM/Paging System | Installation and Operating Manual |
Loudspeakers are connected via screw terminals, behind a removable plastic cover for safety. This Plena System
Amplifier has a very flexible output configuration, allowing for different groups of loudspeakers.
•
Connect 100 V-loudspeakers for zone 1 to the 100 V-/0-terminals of zone 1. The selection button and the output
attenuator for zone 1 (both on the front panel) control this output. If a low impedance loudspeaker is used for
zone 1, connect it to the 8 Ohm- / 0-terminals of zone 1, but now the output level will not be affected by the
attenuator.
•
Proceed in the same way for zone 2.
•
Connect 100 V-loudspeakers that should receive only priority announcements from microphone 1 to the Call
Only 100 V- /0-terminals. For this, the priority mode must be enabled (see §4.2).
The Call Active terminals provide voltage free relay contacts. This contact is closed as long as a priority call is
active. This contact may be used for overriding remote volume controls or other purposes. It is switched together
with the Call Only loudspeaker zone.
Note
Ensure that the loudspeakers are wired in phase by connecting the 0-terminals of loudspeakers in the same
zone together to the amplifier 0-terminal.
Caution
Connect 100 V-loudspeakers in the same zone just in parallel, but take care that the total power of the
loudspeakers, i.e. the load, does not exceed the 120 W power rating of this Plena unit
Caution
It is not recommended to use both low impedance loudspeakers and 100 V-loudspeakers simultaneously.
Multiple low impedance loudspeakers should be connected in series or parallel so that the total impedance is
more than 8 Ohm.
Bosch Security Systems | 2003-09 | 3922 988 25012en
External settings and connections
en | 15
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