Bosch PLE-1MA060-EU User Manual

Bosch Security Systems | 2007-11 | PLE-1MA030-EU,  PLE-1MA060-EU, PLE-1MA120-EU en

Plena Mixer Amplifier | Installation and User Instructions | Connections and settings

 en | 22

4.3 Unit 

settings

The unit can be quickly set-up for operation by setting 
the following controls at the rear of the unit:
•

DIP switches

•

Rotary  dials.

See the following tables for an overview of the settings 
and typical examples of their use.

DIP switch

On

Off

Typical example (On)

Chime 

(mic/line 1)

Chime will be sounded at the 

beginning of an announcement.

Chime will not be sounded 

at the beginning of an 

announcement.

Announcement of train 

departure time.

PTT “Push to talk” 

(mic/line 1 only)

This input is muted when the push 

to talk contact is open. When the 

push to talk contact is closed:

•

this input is available for 

speech.

•

a chime will sound, if selected. 

•

the music and other mic/line 

inputs will be reduced in 

volume to the level set by the 

ducking level control knob.

Push to talk off. The signal 

will be mixed with the other 

mic/line signals.  

Microphone 1 will mix with 

the background music or 

the other microphones in 

the selected zones.

Users can have private 

conversations during live 

broadcasts (for example, 

with an all call call-

station, such as the 

PLE-1CS).

Line

Input signal from line.

Input signal from 

microphone.

Depends on set-up.

Speech filter

Enhances clarity of speech, by 

cutting-off the lower frequencies 

of the signal.

Speech filter inactive.

Use for announcements

Phantom power

Provides power to condenser 

microphones.

Phantom power 

unavailable.

Enable phantom power if 

you use electret or 

condenser microphones.

VOX 

(mic/line 2 only)

Temporarily suppresses the 

background music to an 

adjustable “ducking level” (see 

table 4.2) while you speak into the 

microphone. The VOX mode is 

normally used with hand-held 

microphones such as the 

LBC 2900/15. Background music 

and announcements will be heard 

in the selected zones. A chime is 

not available in this mode.

VOX inactive. 

Microphone 2 will mix with 

the background music or 

the other microphones in 

the selected zones.

Use to make casual 

announcements (such as 

announcing the winner of 

a competition) while 

temporarily suppressing 

the background music to 

an adjustable ducking 

level.