MOTM

JH> The VF11 schematics are a well-kept secret...

And presumably so are the FB383 schematics. Which was a proverbial pain
for me when I had one in to fix. MAM never even bothered to send me a
reply to my various requests. Perhaps they thought I was needing it for
some other covert purpose. Anyway I had to reverse engineer the VCO
section to find out the fault. Interesting little circuit but hardly one
that I was going to be bothered to clone or whatever.

But yes, both Yamaha and Roland are very good with circuit diagrams in
the UK. Akai are not so forthcoming.

Regards,

Tony Allgood                   Penrith, Cumbria, England

Oakley Sound Systems                 www.oakleysound.com