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<DIV><FONT color=#000000 size=2>Hi all!</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT> </DIV>
<DIV><FONT color=#000000 size=2>I have one quick question!</FONT></DIV>
<DIV><FONT size=2>While trying to simulate moog ladder filter (lowpass) in
spice, I noticed some weird behaviour and am now wondering if thats normal or
what. The facts are:</FONT></DIV>
<DIV><FONT size=2>- as control current (from exp. converter) is decreased, so is
output level (at frequencies that are below cutoff). Output changes less with
higher value off currents, but that gives range from 1kHz to 100kHz with
original values from Minimoog filter schematic. Weird...</FONT></DIV>
<DIV><FONT size=2>- as resonance is increased, the level at middle frequencies
(below cutoff) decreases.</FONT></DIV>
<DIV><FONT size=2>- there is always some bass-boost around 10Hz (in respect to
mid frequency level)</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2>What I would like to know is, if this behaviour is like it
should be, or am I doing something wrong. The scheme is copied right since I've
checked it hunded times. I've used component values as in original Minimoog
filter circuit.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Tadej</FONT></DIV></BODY></HTML>