From clintmeech@yahoo.co.uk Fri Jul 07 20:35:12 2006
Subject:EXP-100A Hammond Expression Pedal Circuit diagram/pin-out

Hi

Does anybody know how the EXP-100A works?

I was planning on making an adaptor cable for it so that could be used
with non-Hammond keyboards with standard 1/4" jack pedal inputs (0 to
10k-50k ohms).

After measuring the resistance between pins on the EXP-100A, I'm
beginning to think that it's not as simple as I was hoping for (I was
hoping to see some sort of resistance network between the pins). It's
possibly not passive like most pedals, and gets some power from the
Hammond itself. I really have no idea.

Any ideas?

Cheers,

Clint