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Bosch Security Systems | 2007-12 | PLE-1MA030-US, PLE-1MA060-US, PLE-1MA120-US en
Plena Mixer Amplifier | Installation and User Instructions | Connections and settings en | 25
table 4.2: Rotary controls
Rotary control Effect Typical example
Ducking level control Sets the required ducking level when VOX and/or
push to talk is active (see table 4.1). When the
ducking level is set to mute, the music volume will be
fully attenuated; when the ducking level is set to mix,
both music and speech inputs can be heard - music
and speech will be mixed. When ducking the music
input is ducked (attenuated), the microphone/line
inputs are always muted when a call is made.
Set the ducking level control to
mute if you want the
announcement to be heard without
background music.
Tele ph on e
emergency/70V
volume control
Attenuates the emergency announcement or signal.
Control range from -25 dB to 0 dB. For safety
reasons, the volume of the emergency
announcement or signal cannot be fully set to zero.
Set the volume of the emergency
announcement to a higher level
when the system is being used in
large open areas.
Note
When PTT or VOX are selected, the ducking
control controls between 3 dB attenuation (very
little ducking) to –∞ dB (muted).
When ducking, the music is also present on the
Call only output. If you do not want this, set the
ducking control to mute.