[sdiy] inductor source?

[David Moylan]

I've had fixed filters on my mind a lot lately.  I built an effect pedal
format LC filter box a few years ago that could do boost or cut at two
frequencies simultaneously.  Each band had 12 possibilites.  It was
essentially passive with make up gain and sounded fine but the topology
limited the effective Q.  That didn't bother me too much as I was using
it primarily for gentle shaping of guitar.

I used a series LC circuit since in that case the Q is dependent on the
L, so it would remain relatively constant when switching between caps.
And the caps were wired in series around a rotary switch.  That's the
way it's done in Orange amps and it seems to keep the pops down.

It was built with samples I ordered from Wilco. I've been fooling around
with it some more: increased the Q some which I liked.  Then, realizing
I don't use the cut position much I changed the topology to only boost.
 This is more in the fixed filter family since you get no signal with
both knobs down.

I like it a lot.  I can take a simple saw (with some LPF) and go from
something akin to an upright bass to something that sounds like a mouth
harp or rubber band to insect tones.  Since it seems effective and since
the MOTM fixed filter is a dead project I think, I'd like to expand on
my own little fixed filter.  I figure 3 or 4 switchable bands would be
almost as useful as 10 single bands but where can I get 1H or larger
inductors?  Judging from how hesitant Wilco is to give me a quote or
tell me a minimum quantity they don't want to deal with small potatoes.
 It's too bad.  I like these little shielded inductors.  Do they have
distributors?  Are there any alternatives?  Or is there enough interest
to try to get a group buy together?

Yes, I know resonant filters can be made without inductors, but they
make it so damn easy.  And aren't they more fun?  I haven't had any
problems with hum pickup with these little Wilco BSL series.  Hopefully
Harry doesn't feel about inductors the way he feels about BBDs...I can
hear it now....

Dave