PEAVEY FEEDBACK FERRET Instruction Manual

Operating Instructions
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Where To Put Your Ferret
The Feedback Fe r ret can be used in a variety of locations within a sound system. Place a Fe r ret at the input
i n s e rt of eve ry microphone or you could process many microphones together by placing a single Fe r ret on
the output of a vocal subgro u p. One of the most common connections is to install the Fe r ret between the
m i xe r Os output and the power ampOs input. This mixer output may be from the main output or the monitor
outputâ depending on your needs. You can also place the Fe r ret on a single channelOs insert to eliminate
feedback from a single microphone or instrument. Once the Fe r ret has determined the pro b l e m
f requencies for a particular setupâ you can save that group of filter settings to one of the four pre s e t
buttons for instant recall.
How Does It Work?
The Ferret includes a set of 16 digital notch filters that employ sophisticated algorithms that seek out and
destroy feedbackâ without destroying your tone. There are two sets of filters on the Ferretâ static and
dynamic. Filters 9�16 are static and always set before the dynamic filters (1�8). Once these static filters are
setâ they lock and maintain their status until they are reset by the user or a different preset is selected. The
dynamic filters (1�8) are those filters that change as your needs change. Any filter (static or dynamic) that
is setâ but not locked (as indicated by blinking filter LED)â will slowly release and return to flat (0 dB) and
be available for further use.
When the Ferret locates an offending frequency (feedback)â it applies a filterâ starting with filter 16. This
filter is centered at the feedback frequency and uses only as much attenuation as needed to remove the
feedback. If feedback continuesâ the filter depth is progressively increased until the feedback is gone. If the
feedback is momentaryâ such as a short squealâ the Ferret applies a filter but slowly releases it in .10 dB
steps until it is returned to flat (0 dB). If the same frequency causes feedback againâ the same filter will be
reapplied. This process continues as additional filters are engagedâ starting from the right side of the Ferretâ
until all feedback is gone. Monitoring continues as the Ferret attempts to release each active unlocked filter
.10 dB at a time. Once a filter reaches 0 dBâ the Ferret returns the filter to the queue. The Feedback Ferret
continuously applies the least amount of attenuation required to eliminate feedback.
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