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<p>In my morning music search on YouTube I found this video. From
the comment section for the video:</p>
<p>"<span class="yt-core-attributed-string
yt-core-attributed-string--white-space-pre-wrap" role="text">The
filter is a YuSynth Minimoog clone, which I highly recommend to
absolutely everyone."</span></p>
<p><span class="yt-core-attributed-string
yt-core-attributed-string--white-space-pre-wrap" role="text">Jay
S.<br>
<br>
<a class="moz-txt-link-freetext" href="https://www.youtube.com/watch?v=DepND1giLwA&list=TLPQMTMwNjIwMjPk5VpSYqT0hg&index=6">https://www.youtube.com/watch?v=DepND1giLwA&list=TLPQMTMwNjIwMjPk5VpSYqT0hg&index=6</a></span></p>
<p><span class="yt-core-attributed-string
yt-core-attributed-string--white-space-pre-wrap" role="text"><br>
</span></p>
<div class="moz-cite-prefix">On 6/12/2023 3:44 PM, David G Dixon via
Synth-diy wrote:<br>
</div>
<blockquote type="cite"
cite="mid:9ED8136DEB7A4653BDA170326403EA61@david78c70950b">
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<div><span class="183372522-12062023">So, I replaced a couple of
the trimmers on my Minimoog filter board -- the 1k and 500R
trimmers were one-turn wonders, and the 500R was actually a
470R cheapo flat trimmer that shorted out every time I put a
screwdriver in it. I replaced them with proper 18-turn
trimmers, and I think the circuit works better now.</span></div>
<div><span class="183372522-12062023"></span> </div>
<div><span class="183372522-12062023">So, it seemed to work pretty
well. I was getting good filtering. It still didn't sound
much like a Minimoog to me. Also, I don't really like the way
that it responds to high resonance.</span></div>
<div><span class="183372522-12062023"></span> </div>
<div><span class="183372522-12062023">Then I swapped the feedback
resistors on the input and output amplifiers (56k to 120k on
the input, 120k to 56k on the output) to make them both unity
gain and drive the filter a bit more. This certainly did not
improve things. At the highest input attenuator setting, the
filter just sounds harsh and unpleasant. At a middle setting,
it sounds much better, but simply isn't loud enough. Hence,
that was a bad idea, and I will swap them back.</span></div>
<div><span class="183372522-12062023"></span> </div>
<div><span class="183372522-12062023">Then, using the same VCO and
ADSR settings, I switched to my Dr. Octature Roland-style
filter (but with gain cells to eliminate signal droop with
resonance) -- this filter simply sounds brilliant (to me).
It's loud, snappy, has much more pleasing resonance, and "she
responds like a limousine brought alive on the silver screen"
to incoming CV from the ADSR.</span></div>
<div><span class="183372522-12062023"></span> </div>
<div><span class="183372522-12062023">Maybe I just don't need a
Minimoog filter. Or maybe there is still something wrong with
it. I don't know. I'm half done building the same board with
547/557 instead of 3904/3906. I'm going to finish that board
and put it in the module to see if it is any better. If not,
then I will probably just abandon the whole idea of building a
Minimoog filter.</span></div>
<br>
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</blockquote>
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