dbx AFS224 Quickstart Guide - Manual (Page 9)

16. When you have reached the desired performance level, press the MODE buttons
until they are both lit red. You are now in “Live” mode.
17. For a faster reaction time with the Live filters, try setting the filter TYPE to
“Music Low” (green) or “Speech” (off).
Note: A wider notch filter (such as “Speech”) will catch the feedback faster, but may
be more audible. A more narrow notch filter (such as “Music High”) will not catch
the filter as fast, but will be less audible once the filter is set. You will need to use
your discretion when setting the “Type” parameter.