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Bosch Security Systems | 2007-10 | PLE-2MA120-US, PLE-2MA240-US en
Plena Mixer Amplifier | Installation and User Instructions | Connections and settings en | 22
4.2.5 Connecting speakers
4.2.5.1 Constant voltage loudspeakers
The mixer amplifier can drive 70 V constant voltage
loudspeakers.
Connect the loudspeakers in parallel and check the
loudspeaker polarity for in-phase connection. The
summed loudspeaker power should not exceed the
rated amplifier output power.
You can use the Call Only output for 3-wire remote
volume control override. You can also use this output as
an extra zone where announcements can be heard, but
not music.
4.2.5.2 Low impedance loudspeakers
Connect low impedance loudspeakers to the 4 Ohm/0
terminals. This output can deliver the rated output
power into an 4 Ohm load. Connect multiple
loudspeakers in a series/parallel-arrangement to make
the combined impedance 4 Ohm or higher. Check the
loudspeaker polarity for in-phase connection.
figure 4.8: Connecting speakers
figure 4.9: Connecting speakers