AUDAC COM12 Mk2 User Manual - Chapter 2
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Chapter 2
Front & rear panel
Front panel overview
Front panel description
The front panel for both COM12 and COM24 amplifiers is identical and enables you to
control the level for every input and the overal output volume. A two band tone control
is provided for the main output, allowing adjustment of the overal system frequency
response while zone (output) switches allows enabling / disabling of the different speaker
zone outputs.
Input level controls:
Using the input level controls, the individual level for each connected input can be set.
This way, multiple inputs can be mixed with each other between zero and maximum level.
Chime:
When pressing the chime button, the selected chime tone as pre-announcement for
paging will be played once (identical as a contact closure on remote mic ‘SW’ terminal on
rear panel). How the selection for this pre-announcement tone can be done, is described
in a later chapter of this instruction manual.
Two band tone control:
Using the bass and treble rotary dials, the overall system frequency response can be
adjusted within a range of ± 12 dB. The level will be increased while clockwise rotating,
while counter-clockwise will result in a level decrease. In center position, both dials are
set to neutral level.
Master volume control:
Using the master volume control, the overal system volume will be adjusted in a range
between minimum and maximum level.
LED indicators:
The current system operation is indicated on the 7 digit LED bar graph. The bottom LED is
the power indicator which illuminates in blue colour when the system is switched on. The
5 LED’s above monitor the current output level within a range of -20 dB and +3 dB, while
the upper protect LED (red) illuminates when the system is in protect mode (some failure /
overload on the outputs occured). All outputs will be muted when this LED illuminates.