[sdiy] Gakken SX-150

[HOSHUYAMA]

Hello List,

I think you know of Gakken SX-150, which is a supplement of a Japanese book. 
Basically, most of the information is in Japanese.  However, some English 
information is available at Matrixsynth blog:

  http://matrixsynth.blogspot.com/search?q=SX-150

Its schematic is already revealed in its instruction manual, however, 
it does not include component values.  To get the schematic with component
values, which is essential for us, I made one from the open information 
on the internet and some measurement of an SX-150.

  http://houshu.at.webry.info/200808/article_3.html

Actually, this small synth was designed by our Naoki Iwakami 
(AKA. "GAN" in this list).  The design is unusual to save the cost, 
but very clever and unique!

Enjoy,

Sam HOSHUYAMA
Saitama, JAPAN