Doepfer A-123 24dB High Pass (no longer available) - Manual (Page 7)

doepfer System A - 100 VCF 4 A-123
7
H To create a 24 dB bandpass filter with
voltage-controlled middle frequency and
bandwidth, put both filters in series (see the
A-122 user examples). For voltage control of
middle frequency and bandwidth, follow the
relevant notch filter instructions. (see Fig. 5).
Fig. 5: Effect of FCV and BCV on the band pass
filter response.
Freq. Ö
FCV
BCV
f
M