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<DIV dir=ltr align=left><SPAN class=255033717-23102016><FONT color=#0000ff
size=2 face=Arial>I have always used 200 or 220pA caps in all my filters --
I bought a stash of 200pA silvered mica caps from a local store (which were
great, but we both ran out of them), and now often use 220pF C0G
ceramics. The max cutoff is well above 20kHz. I would guess it's as
high as 30 or 35kHz.</FONT></SPAN></DIV>
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color=#0000ff size=2 face=Arial></FONT></SPAN> </DIV>
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<DIV dir=ltr align=left><FONT size=2 face=Tahoma><B>From:</B> Synth-diy
[mailto:synth-diy-bounces@dropmix.xs4all.nl] <B>On Behalf Of </B>Jacob
Watters<BR><B>Sent:</B> Sunday, October 23, 2016 9:48 AM<BR><B>To:</B> synthdiy
diy<BR><B>Subject:</B> [sdiy] Max Filter Cutoff<BR></FONT><BR></DIV>
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<DIV></DIV>I am working on a filter and I was trying to get the maximum cutoff
up to 20kHz. I found that I needed much smaller caps than what is usually
used in most filters.
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<DIV>Then I noticed that on the Arp 2600 the max filter cutoff is labelled as
10kHz.</DIV>
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<DIV>What is the normal max cutoff for a 4-pole -24dB analog
filter?</DIV></BLOCKQUOTE></BODY></HTML>