Low Impedance Loudspeakers - Bosch PLENA LBB1938/30 Installation And Operation Manual

14 en | External connections
6.5

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.
Figure 6.4: Priority input and control terminals
2018.11 | V1.2 | LBB193x/x0
8 Ohm
8 Ohm
4 Ohm
100 V 70 V
4 Ohm
8 Ohm
D ire ct O utput
100V 0 70V 0 8
Priority Controlled Output 24V DCIn
100V 0 100V 0
Priority Only No Priority
Priority Only No Priority
Installation and operation manual
8 Ohm
8 Ohm
8 Ohm
PLENA power amplifiers
Bosch Security Systems B.V.