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The DBX AFS2 is a digital signal processor for suppressing feedback. Feedback is reliably suppressed without changing the sound. This makes the AFS2 an indispensable and valuable aid for live productions and concerts.
The signal processor has a very fast algorithm for recognising feedback. If they occur, the algorithm intervenes immediately to correct them. Extremely narrow notch filters are set (up to 1/80 of an octave) to remove unwanted feedback sequences. Because only a fraction of the frequency spectrum is processed, a change in the sound is barely audible.
The user-friendly DBX AFS2 works in 2 operating modes - fixed mode and live mode. In fixed mode, filters are set for frequencies that cause feedback. Once assigned, the settings are retained and saved. There are corresponding presets for vocals and music. In live mode, the audio signal is analysed in real time and feedback is detected and removed. This mode is particularly useful for concerts and presentations. For example, when singers change their position, new feedback frequencies constantly appear. All filter assignments are constantly updated and those no longer required are automatically removed using the filter lift function.
DBX AFS2I have used several different systems over the years, and this latest DBX unit is by far the most transparent and effective. The adjustable time 'auto release' on the live filters is very useful. The new LCD screen makes setting up very easy and very fast. It is superb on AUX sends to stage monitors, but transparent enough for mains too. Totally recommended.
I have two of these now on stage monitors. As a single handed soundie the time these save me ringing out is great, using the wizard, open the mics and just push up the faders. The device figures out what filters you need. Sound quality is excellent, filters very narrow and in the right place means sound is unaffected and often better than without.
