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OPERATING THE FEEDBACK LOCATING SYSTEM
The feedback locating system is normally used in one of two ways.
1.
To catch and reduce/eliminate feedback "on-the-fly" during a
performance.
2.
To determine frequency bands that are susceptible to feedback before the
performance, and eliminate them in advance. This is done, after the system is
set up, by bringing up the microphone levels slowly to the point of feedback. As
they start to feedback, note the LED activity on the FLS. Move the faders to
decrease the "identified" bands. Now you have eliminated a high percentage of
potential feedback problems before the performance even begins.
NOTE: It is not uncommon for feedback to occur over several frequency bands. Also,
go easy when making fader adjustments, since extreme movements will affect your
performance and be counterproductive. Some feedback or ringing, although audible,
may not be louder than the other program material and may not light an LED.
22.
7-BAND GRAPHIC EQUALIZER
Provides ± 12 dB equalization at each center frequency. EQ boost is obtained by
moving a particular EQ band's slide control above the center line. EQ cut is obtained by
moving a particular EQ band's slide control below the center line.
OPERATION NOTE: This equalizer is designed to provide room equalization, feedback
control and system tone control. No amount of equalization will correct the response
curve of a poor loudspeaker. Always begin with all sliders in the "0" position and avoid
excessively cutting large segments of the audio passband, which would limit the
system's dynamic range.
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