2
Overview
Introduction
The AFS2 is the second generation feedback suppression processor from dbx
®
. Whether you’re playing with your band, a live
sound engineer, or an audio installer, you know how annoying and offensive feedback can be. Feedback is caused when an
in-phase audio loop is created between an input transducer (such as a guitar pickup or microphone) and an output transducer
(a loudspeaker). Using the updated AFS algorithm first introduced in the acclaimed dbx DriveRack PA2 speaker management
system processor, the AFS2 kills feedback dead in its tracks without adversely affecting the tone of your system.
The AFS2 is a two-channel device and can be configured for stereo linked or dual mono operation. It provides 24 filters per
channel with filter widths as narrow as 1/80th of an octave. Filters can be configured for Live or Fixed operation. Use the
Fixed filters to initially ring out the system for higher gain before feedback then use the Live filters for on-the-fly, automatic
feedback protection during the performance as conditions change. 24 Filter LEDs show at-a-glance status of all filters so
you’re never left guessing what the processor is doing. Need more detailed information about the filters? The easy-to-read,
backlit LCD display shows the frequency, width, and attenuation amount of each set filter.
Not sure how to ring out a sound system? No problem. The new Wizard in the AFS2 walks you through the entire setup
and ring-out procedure. Feedback suppression couldn’t be any easier. Just press the big, red Wizard button and follow the
on-screen instructions.
The updated AFS algorithm in the AFS2 can now detect and eliminate feedback faster than ever before and with even higher
precision. The AFS2 offers the following enhancements over the AFS224:
• It’s faster at eliminating the offending feedback frequency.
• It can better determine what is actually feedback, making it far less likely to set false triggers on feedback-like audio
sources such as a flute or keyboard.
• It can better determine how much attenuation is required to notch out the feedback, resulting in notch filters which aren’t as
deep and are even less audible.
• It prevents the filters from being too narrow to tackle feedback at lower frequencies.
• It has better frequency resolution which provides pinpoint accuracy and uses the narrowest filters possible.
• Live filters are lifted more gradually to better determine if it is safe to lift the filter, preventing blaring feedback from
suddenly returning.
• Allows you to store up to 5 user presets.
We think you’ll agree that the AFS2 couldn’t be any easier to use and is up for any feedback suppression task you throw at it.
Thanks for choosing dbx.
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