Master Section Control - Alto APM80.1500 User Manual

8-channel stereo powered mixer with dsp
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MON (AUX1) Control
5
Your
APM80.1500
has tw auxiliary sends which can be used for sending signals to external or internal effects
device or for creating a monitor mix, they are used to adjust the level of respective channel signal sent to AUX bus,
and the adjustable range goes from -
The AUX1 control is configured as PRE-FADER, which means that the signal is sent out before reaching the channel
fader. It is used for a monitor mix in a live sound mixing, or for a headphone mix in recording application.
DSP/FX (AUX2) Control
6
The AUX2 control is configured as POST-FADER, so the audio signal will be affected by channel fader. Via the
AUX2 OUT jack, the AUX2 signal can be sent to an external effects device, furthermore, the AUX2 signal can also
be assigned to internal onboard effect module.
PAN Control
7
Abbreviation of PANORAMA control for mono and stereo channels. It is used to determine the amount of channel
signal sent to left and right of main mix. Keep this control in center position, then the signal will be positioned in
middle of stage. Turn this control fully counterclockwise, the signal will be present only on the left of main mix and
vice-versa.
Channel LEVEL Control
8
This control is used to adjust the overall level of respective channel. The adjustable range goes from -
4.2 MASTER SECTION Controls
STEREO GRAPHIC EQ
9
Your
APM80.1500
is equipped with both stereo graphic EQs, one is for MAIN MIX; another for MONITOR MIX,
each of them provides 9-band fader controls. Via these faders, you can boost or attenuate the selected frequency
by 15dB at a preset bandwidth. When all faders are at the center position, the output of the equalizer is flat res-
ponse. They are used to modify the frequency "contour" of a sound. The EQ function will be activated automatically
as soon as
you operate your APM80.1500
FEEDBACK TERMINATOR Button (MONITOR MIX)
10
Pressing this button the automatic feedback detection function will be activated in monitor signal path. When a
frequency band fader lights up, it means the level of this frequency band is too high, i.e. there is a little feedback
occurring in this frequency band, which may result in unpleasant speaker howling or whistling . In this case,
in order to eliminate feedback, you need to turn down the corresponding fader.
o
to +10dB.
9
.
12
10
"
9
to +10dB.
11
"
"
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