[sdiy] Ken stone's synthacon filter

[Peter Grenader]

What did you use for the optional output level pot he specs in the final op
amp - the feedback (I believe).

The only odd (and actually kind of interesting) behavior I've noticed with
the Steiner filter is if you used metal can 2222s, you'll get FM radio
reception through to  your speakers when you touch the cans when the power
is on.  Kind of cool, although it's turning up a top 40 oldies station (my
luck).  You want to get horrified - imagine hearing Neal Sedaka over your
system at 2AM!!!

- P



touch the Karl Ekdahl wrote:

> Hi all, i'm having some trouble with Ken Stone's
> synthacon..  The thing is that the output is really
> low and noisy sometimes, and sometimes it's clean.
> Apparently a bad part and/or cable, but if anyone
> could supply me with any basic testpoints and what
> reading i *should* get i might not have to completely
> re-solder the whole unit...  I tried following the
> schematic and measure different points with my scope,
> but i get nothing at all (i have an old scope and no
> probe). Any ideas anyone?
> 
> Karl
> 
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