Bosch PLENA Series - Front panel

PLENA Mixer amplifier, 4-zone, 240W Introduction | en 9
Bosch Security Systems B.V. Operation manual 2019-03 | V1.1 |
3.4 Controls, connectors and indicators
3.4.1 Front panel
Number Description
1 Power button, with power-on LED.
2 Label holder for user-defined description of microphone/line 1 and microphone
2 and 3 inputs. Custom labels can be created by user.
3 Label holder for user-defined description of music sources (Aux 1, 2 and 3).
Custom labels can be created by user.
4 High tone (treble) control knob for mixed output.
5 Label holder for user-defined description of zone names. Custom labels can be
created by user.
6 Master volume control knob. It controls all inputs except emergency.
7 LED VU meter for master output, with LEDs for -18, -12 -6, -3, 0 dB.
8 Input level control knobs for:
• microphone/line 1
• microphone 2
• microphone 3.
9 Music source selector (for Aux inputs 1, 2, and 3). Selected Aux input LED
switches on (green), unselected Aux input LEDs remain off.
10 Aux-3: Music input with 3.5 mm mini-TRS connector for a music source like a
mobile phone or laptop. Stereo signals are converted into mono.
11 Volume control knob for selected music source input.
12 Low tone (bass) control knob for mixed output.
13-16 Zone 1 to 4 selection buttons with LED indicator.
17 Headphone socket.