Plena Power Amplifier | Installation and User Instructions | Amplifiers
Constant voltage loudspeakers
The power amplifier can drive 100 V constant voltage
loudspeakers at full power (100 V) or half power (70 V).
Connect the loudspeakers in parallel and check the
loudspeaker polarity for in-phase connection. The
summed loudspeaker power should not exceed the
rated amplifier power.
figure 3. 1 0: Priority input and control terminals
Use the mains lead to connect the amplifier to the
figure 3. 1 1: Mains lead
Bosch Security Systems | 2006-11 | 9922 141 50751en
D ire ct O utput
Priority Controlled Output 24V DCIn
Priority Only No Priority
Low impedance loudspeakers
Connect low impedance loudspeakers to the 8 Ohm/0
terminals. This output can deliver the rated output
power into an 8 Ohm load. Connect multiple
loudspeakers in a series/parallel-arrangement to make
the combined impedance 8 Ohm or higher. Check the
loudspeaker polarity for in-phase connection.
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