JBL EVOi.net User Manual page 17

ANTI FEEDBACK CONTROL EQ SELECT
FILTERS FREE 1
FIXED AFC SET 2
3
FIXED SETUP
LIVE AFC ON
HOLD TO CLEAR FIXED HOLD TO CLEAR LIVE
The total EVO System can be optimized for an individual
program using the EQ SELECT button (Figure 21). Each
press of the button will apply a different EQ curve to the
entire system, very much like the way a domestic HiFi or
car stereo EQ is used to optimize the system for different
types of music. The settings scroll through as follows:
NEUTRAL The default start-up EQ or last set Auto EQ.
SPEECH An EQ curve that optimizes the system
performance for SPEECH.
MUSIC I Ideal for LIVE music performance.
MUSIC II Recommended for the enhancement of
RECORDED MUSIC playback.
SETTINGS
MUSIC I
MUSIC II LOCKED
SPEECH
NEUTRAL TEST
Two different types of Anti Feedback Control engines can
be initiated and set up via EVOi.net: Live Anti Feedback
Control and Fixed Anti Feedback Control.
Live Anti Feedback Control is designed to be used during
a performance. Once initiated, six dynamic filters are set
into action, instructed to search for and eliminate feedback
once found. When feedback is detected, a filter is placed to
eliminate it before it "runs away". If additional feedback is
found, another filter is used. The
indicators tell you how many of the six filters are left.
Fixed Anti Feedback Control is designed to eliminate
feedback before a performance begins, a routine possibly
done during a soundcheck. For a fixed stage setup of
microphones, once initiated, six filters are available to
eliminate feedback. The
tell you how many filters have been used.
Note: There should be no feedback with a correctly set up
and operated sound reinforcement system. The general idea
of the indicators is as a guide to the
operator. If all the Anti Feedback Filters have been used,
this is a strong indication that the whole system needs
adjustment. Typically this is confined to the mix.
indicators also