ALESIS M-EQ230 - Manual (Page 8)

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B) For feedback control, the sliders of the M-EQ 230 should
always be operated in the downward or cut position.
FIGURE 4
CONTROLLING FEEDBACK
A. Find the 2 major feedback frequencies (1 high, 1 low frequency)
B. Slightly decrease adjacent bands.
ROOM FEEDBACK FREQUENCIES
ADJACENT BANDS SLIGHTLY DECREASED
A.
B.
FOR INSTRUMENT TONAL CONTOURING
1 ) Find the desired frequency band by either referring to
the Frequency Chart (see Figure 5) or by
experimenting.
2 ) Gradually raise the slider of the disired band and the
two adjacent sliders gradually until the desired result is
achieved.
3 ) Repeat as necessary.
If you should find that you are adding large amounts of EQ boost
with more than half of the sliders boosted, then the overall effect is