[sdiy] MXR Pitch Transposer Schem/Circuit

[Travis Thatcher]

While not technically SDIY (I apologize) I just got a black face MXR
Pitch transposer yesterday. Its a pretty amazing sounding piece of
gear with very little info on the web about it.  I did some quick
experimenting with the cv input and a sequencer and was very pleased
with the results but I was curious if anyone else had any experience
with these, particularly any mods or schematics.

I'm assuming its an older bbd based design, though the chip which I'm
guess is the bbd has had the labeling info removed. It does great
pitch shifting and with the regen cranked it goes from weird flanger
to space sounds pretty quickly. It sounds very similar to a friend's
mxr flanger that I fixed so I'm assuming the circuit is roughly the
same. Kind of interested how it works!



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