Toa M-633D - Manual (Page 21)

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10. SETTING THE FBS FUNCTION
10.1. What is the Feedback Suppressor Function (FBS)?
It is a function that the built-in feedback suppressor filter automatically works to suppress acoustic feedback
when the feedback occurs.
10.2. Setting the FBS Function
If acoustic feedback occurs when the FBS function is enabled, the feedback suppressor filter automatically
operates to suppress the feedback.
The FBS function assigned to each of the MONO 1 – 6 channels can operate independently.
10.2.1. Enabling the FBS function
Hold down the FBS key for 1 second or more when the FBS operation indicator remains unlit.
The FBS operation indicator will light, and the FBS function is enabled.
Notes
• Feedback may not be suppressed as the case may be. In this case, decrease the corresponding channel’s
monaural input level by turning the control knob counterclockwise.
• Feedback suppressor filter settings are not stored. The setting data is initialized when the power is turned off.
However, the FBS function enabled or disabled status is stored.
10.2.2. Disabling the FBS function
Disabling the FBS function causes the feedback suppressor filter to be initialized.
Hold down the FBS key for 1 second or more while the FBS operation indicator is lighting.
Lit
Hold down for over 1 second,
then release when the indicator
lights.
Level
Frequency Feedback
frequency
Feedback suppressor
filter
Unlit Hold down for over
1 second, then
release when the
indicator goes off.
Lit
The indicator goes off, and the FBS function is disabled.