Setting high and low cut in the multidelay

In order to set the high and lo cut to the multi delay, you can apply this formula:

Freg = sqrt(f_high * f_low)

Q = Freq / (f_high - f_low)

So, for a lowcut of 20 Hz and a hicut of 2.5 kHz:

Freq = sqrt(2500 * 20) = 224

Q = 224 / (2480) = 0.09 (0.1 is close enough)

Enter the respective results in the FREQ and Q parameters

Note: be sure Master Q is set = 1.0