User manual PEAVEY FEEDBACK FERRET II

[. . . ] Before using this appliance, read the operating guide for further warnings. WARNING: When using electrical products, basic cautions should always be followed, including the following: Do not use this apparatus near water. Do not block any of the ventilation openings. install in accordance with manufacturer's instructions. [. . . ] Expect some LEDs to light solid as filters lock down on a problem!Once the feedback is eliminated and filters are set, depress the Normal button on the front panel of the Ferret and return the mixer gain to a normal level. Signal The Present LED lights when signal is present (40 dB down from full scale). The Clip LED lights when the signal is 1/2 dB down from clipping. bypass Press and hold to bypass filters. This takes the Ferret out of the signal path completely. Filters 1­8 (dynamic) will clear first as indicated by their non-lit LEDs. Releasing the button at this point will leave the static filters (9­16) in their current state. (Note: Feedback often occurs around a range of pitches or frequencies, not necessarily a single pitch. By engaging this button, the Ferret widens the effective range of each filter and subsequently uses fewer filters to accomplish the same result. Panic Panic filters are a special class of filters designed to quickly control sudden, extreme feedback. Filters 9­16 are static and always set before the dynamic filters (1­8). Once these static filters are set, they lock and maintain their status until they are reset by the user or a different preset is selected. The dynamic filters (1­8) are those filters that change as your needs change. Any filter (static or dynamic) that is set, but not locked (as indicated by blinking filter LED), will slowly release and return to flat (0 dB) and be available for further use. When the Ferret locates an offending frequency (feedback), it applies a filter, 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 continues, the filter depth is progressively increased until the feedback is gone. If the feedback is momentary, such as a short squeal, 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 again , the same filter will be reapplied. This process continues as additional filters are engaged, starting from the right side of the Ferret, until all feedback is gone. [. . . ] Continue bringing the master level up until you've reached the required volume level. As you start to hear feedback, momentarily stop adjusting the levels to allow the Ferret to complete the adjustment of its filter. Normally, you should hear the onset of feedback before the Ferret takes control. In most applications, this should give you plenty of gain and still leave additional filters open for later use. [. . . ]