Bosch Plena Voice Alarm System User Manual download pdf (Page 12)

• Fully-featured, 4-input mixer

• 3 different input priority modes

• Individual audio settings for each input

• Interconnection for external equipment

• Ideal in combination with booster amplifiers

Plena Universal Pre-Amplifier

The universal pre-amplifier extends the

configuration possibilities of the Plena family.

It offers a choice of mixing, blocking or serial

input priority modes. Each input channel has its

own volume and tone controls, a selectable filter

to optimize speech intelligibility, and direct

outputs. On the output, it’s also possible to

override local loudspeaker volume controls to

ensure an important message gets through.

3 input priority modes provide a choice of: mix-

ing mode; blocking mode (first activated channel

gets priority over all others); and serial mode

(channel 1 has priority over 2, 3 and 4, channel 2

has priority over 3 and 4, and channel 3 has prior-

ity over 4). In mixing mode, each input channel

can be mixed to the master output,

irrespective of priority. There is an interconnec-

tion point available to cascade pre-amplifiers or

to connect an equalizer or the Plena Message

Manager or Feedback Suppressor.

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Bosch Plena Voice Alarm System User Manual Page 12