Intellijel Dr. Octature II - Manual (Page 8)

Q - Quad mode
06
set resonance
self-oscillate past 1
o'clock
gain unipolar attenuator
for
signal IN
set QUAD mode
4-pole filter out
(360° Q-sinewave)
set COARSE filter cutoff
frequency
signal to be
filtered
out
t
moderate Q & signal IN
out
t
high Q : no signal IN drop
increase
Q
IN
IN
In QUAD mode , the increase of Q doesn't
make decrease the signal IN level, as
usually in this type of filter.
Illustrated here with 4-pole out.
set FINE filter cutoff
frequency