[sdiy] question about a Mankato filter

[David G. Dixon]

If anyone here owns a Mankato filter, I wonder if you could satisfy my
curiosity about one small matter:

I understand from the website that when the filter is self-oscillating with
no input signal, all of the quadrature sine waves have roughly the same
amplitude.

However, it seems to me that when the regeneration is turned all the way
down (i.e., no resonance) and the cutoff frequency is turned all the way up
(i.e., no filtering), then an input signal will be reproduced at different
amplitudes from the various outputs.  Indeed, an unfiltered +/-5V square
wave should come out at approximately +/-2.5V from the 6-dB output, +/-3.4V
from the 12-dB output, +/-5V from the 18-dB output, and +/-6.8V from the
24-dB output.

If someone could confirm or refute this notion by doing an experiment on an
actual Mankato filter, I'd love to know the result.  Thanks in advance!