<div dir="auto">I did a kind of blind test between c0g vs wima polypropylene, in a 2164 based 2pole SVF, and the wimas won. In other circuits, like the ms20 VCF for eg, I think it mattered less if at all.</div><div dir="auto"><br></div><div dir="auto">In hifi mastering type units it’s definitely a thing to use wima for filtering. I think they look good on the board and are easy to spot (for the glam shots) and are known to sound good, so probably a good choice.</div><div dir="auto"><br></div><div dir="auto">I’m presently using an APB spectra console which has a rep for very good channel EQs (I agree). The board is all SMD so would probably be c0g there.</div><div dir="auto"><br></div><div dir="auto">C0g is such a good option when you can have the robot place it, if that’s your jam.</div><div dir="auto"><br></div><div dir="auto">Just my subjective 2 cents!</div><div dir="auto"><br></div><div dir="auto"><br></div><div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Sep 24, 2022 at 4:53 PM David G Dixon via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><u></u>
<div lang="EN-GB" link="blue" vlink="purple">
<div dir="ltr" align="left"><span>I use silvered mica for
VCOs and VCFs, typically 390pF or 500pF. They work very well. They
are typically big brown things that are kinda lumpy.</span></div>
<div dir="ltr" align="left"><span></span> </div>
<div dir="ltr" align="left"><span>You have to be careful
with some types of caps, such as polystyrene, because they are easily damaged or
destroyed when soldering. Not sure about polypropylene. Silvered
mica and metallized polyester are pretty forgiving.</span></div><br>
<div dir="ltr" lang="en-us" align="left">
<hr>
<font size="2" face="Tahoma" style="font-family:Tahoma;color:rgb(0,0,0)"><b style="font-family:Tahoma">From:</b> Synth-diy
[mailto:<a href="mailto:synth-diy-bounces@synth-diy.org" target="_blank" style="font-family:Tahoma">synth-diy-bounces@synth-diy.org</a>] <b style="font-family:Tahoma">On Behalf Of </b>Mike
Bryant<br><b style="font-family:Tahoma">Sent:</b> Saturday, September 24, 2022 3:37 PM<br><b style="font-family:Tahoma">To:</b>
<a href="mailto:prowlerraven32@hotmail.com" target="_blank" style="font-family:Tahoma">prowlerraven32@hotmail.com</a><br><b style="font-family:Tahoma">Cc:</b>
<a href="mailto:synth-diy@synth-diy.org" target="_blank" style="font-family:Tahoma">synth-diy@synth-diy.org</a><br><b style="font-family:Tahoma">Subject:</b> Re: [sdiy] The best types of
capacitors to use when designing a VCF<br></font><br></div>
<div></div>
<table style="padding-left:0px;border-collapse:collapse">
<tbody>
<tr>
<td><font style="padding:3px;line-height:1.6;font-style:normal;font-family:Arial,sans-serif;font-size:12px;font-weight:normal;background-color:rgb(255,236,179);color:rgb(0,0,0)">[<strong style="font-family:Arial,sans-serif">CAUTION:</strong>
Non-UBC Email]</font></td></tr></tbody></table></div><div lang="EN-GB" link="blue" vlink="purple">
<div class="m_6704589854626783078WordSection1">
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)">If
you can afford them then polypropylene are the very best you can get for
pro-audio. But a good metallised polyester isn’t far
behind.<u style="font-family:Calibri,sans-serif"></u><u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)">That
said, for many products automotive quality SMD ceramics (the ones with the
anti-vibration mountings that kill microphony) are more than good
enough.<u style="font-family:Calibri,sans-serif"></u><u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)">There’s
a whole chapter on choosing components like this in Douglas Self’s book which it
is well worth buying a copy of.<u style="font-family:Calibri,sans-serif"></u><u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:rgb(31,73,125)"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p>
<div>
<div style="border-width:1pt medium medium;border-style:solid none none;padding:3pt 0cm 0cm;border-top-color:rgb(181,196,223)">
<p class="MsoNormal"><b><span style="font-family:Tahoma,sans-serif;font-size:10pt" lang="EN-US">From:</span></b><span style="font-family:Tahoma,sans-serif;font-size:10pt" lang="EN-US">
Synth-diy [mailto:<a href="mailto:synth-diy-bounces@synth-diy.org" target="_blank" style="font-family:Tahoma,sans-serif">synth-diy-bounces@synth-diy.org</a>] <b style="font-family:Tahoma,sans-serif">On Behalf Of </b>Logan
Mitchell Sr via Synth-diy<br><b style="font-family:Tahoma,sans-serif">Sent:</b> 24 September 2022 23:12<br><b style="font-family:Tahoma,sans-serif">To:</b>
<a href="mailto:Synth-diy@synth-diy.org" target="_blank" style="font-family:Tahoma,sans-serif">Synth-diy@synth-diy.org</a><br><b style="font-family:Tahoma,sans-serif">Subject:</b> [sdiy] The best types of capacitors
to use when designing a VCF<u style="font-family:Tahoma,sans-serif"></u><u style="font-family:Tahoma,sans-serif"></u></span></p></div></div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;color:black">Hello.<u style="font-family:Calibri,sans-serif"></u><u style="font-family:Calibri,sans-serif"></u></span></p></div>
<div>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;color:black"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p></div>
<div>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;color:black">Can anyone tell me
what are the best types of capacitors to use when designing a VCF
?<u style="font-family:Calibri,sans-serif"></u><u style="font-family:Calibri,sans-serif"></u></span></p></div>
<div>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;color:black"><u style="font-family:Calibri,sans-serif"></u> <u style="font-family:Calibri,sans-serif"></u></span></p></div>
<div>
<p class="MsoNormal"><span style="font-family:Calibri,sans-serif;color:black">Logan<u style="font-family:Calibri,sans-serif"></u><u style="font-family:Calibri,sans-serif"></u></span></p></div></div></div>
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