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Connecting Speakers; Constant Voltage Loudspeakers; Low Impedance Loudspeakers - Bosch PLE-1P120-US Installation And User Instructions Manual

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Plena Power Amplifier | Installation and User Instructions | Connections and settings
4.2

Connecting speakers

Connect speakers to the 25 V, the 70 V or the 4 Ohm
terminals on the Euro style pluggable screw terminal
connector (5) at the rear of the unit.
4.2.1

Constant voltage loudspeakers

figure 4.3: Connecting speakers
The power amplifier can drive 25 V and 70 V constant
voltage loudspeakers. The 70 V connection in shown in
figure 4.3.
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.
Bosch Security Systems | 2008-02 | PLE-1P120-US, PLE-1P240-US en
4.2.2

Low impedance loudspeakers

figure 4.4: Connecting speakers
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.
en | 17

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