This
is a modified clone of the strange, old, out-of-production
Roland Funny Cat. If you want to see what an original
one looks like, click on the OTHER COOL STUFF link,
at the left, and scroll down a bit. The original circuitry
was deciphered with much great help from the likes of
Rob Strand, R.G. Keen, Mark Hammer, et al, and the rest
of the cool folks at Aron's
DIY Stompbox Forum.
In fact, if you want to see what makes the Funny Cat
tick, check out R.G.'s Roland
AG5 Funny Cat
article at GEO.
And, if you want to see some pictures of an original
issue Funny Cat, Check 'em out here,
on the IDEAS page.
You
may be noticing that the clone I made has quite a few
more knobs than the original. Well, I said it was modified,
didn't I? Now, let me see if I can remember... Referring
to R.G.'s
Funny Cat article...
In addition to all the standard controls...
- I
added two 10Ka pots as input and output level controls.
- I
replaced R10 (47K) with a 500Ka pot, acting as a
(sort of) mid-range sweep control.
- I
added a 500Ka pot in series with each of the two
100K feedback resistors (Rfbb and Rfbc, on U2A and
U2B, respectively). One acts as a (sort of) high
sweep control, and the other acts as a (again, sort
of) low sweep control. These sweep controls have
a huge impact on the sound.
- I
added a Range switch that alternates between 220nF
and 680nF caps at C3.
- I
added a Gain switch that alternates between 470K
and 2M feedback resistors at Rfba.
- I
replaced R16 with a jumper for slightly higher output
level from the Harmonic Mover section.
I
did not make this a stompbox, per say... No stompswitch.
As freaky as this thing can sound, I figured it would
mostly be a studio toy. So, it just has the SDS/normal
and the Harmonic Mover/normal toggle switches. But,
I have to say... It's probably the most vocal sounding
envelope filter/auto-wah type pedal I've ever played,
let alone built myself. :)




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