PLENA Mixer amplifier, 4-zone, 240W
A connection to a telephone network must always be made via a telephone coupler that
provides adequate isolation between the telephone network (PBX) and the PLENA system.
The telephone coupler must also meet all relevant requirements for this type of
communication equipment as imposed by law and/or responsible telecommunication
organizations in the country of use. Never try to make a direct connection between the
telephone network and the mixer amplifier.
Music source inputs
When using a CD player, tuner or other auxiliary device for background music, connect the
line-out connectors of the music source to the appropriate line-in connectors of the mixer
amplifier. The unit has three music source inputs:
The mixer amplifier can drive 100 V constant voltage loudspeakers.
Connect loudspeakers to the 100 V terminal on the Euro style pluggable screw terminal
connector (11) of zones 1, 2, 3 and/or 4 at the rear of the unit.
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
Figure 5.1: Connecting loudspeakers
Bosch Security Systems B.V.
two stereo Cinch inputs (Aux 1 and Aux 2) on the rear panel for music from an installed
device like a CD/DVD player or radio
one 3.5mm stereo mini-jack input (Aux 3) on the front panel for music from mobile
devices like a mobile phone or laptop.
Connections | en
2019-03 | V1.1 |