[sdiy]on topic Buchla 259 question

[mark verbos]

Aaron Lanterman wrote:

> 
> 
> Buchla question on the 259: It looks to me like the "order" is control 
> crossfades between two things:
> 
> http://rubidium.dyndns.org/~magnus/synths/companies/buchla/Buchla_2590_4_200.jpg 
> 
> 
> But - it's not clear from the schematic what it's crossfading between - 
> I assume it's... huh, on the schematic there's an "IC31" label with a 
> "1" circled, that's getting crossfadded with an IC30 with a "7" circled 
> - but it's not clear what this is referring to on the other sheets. I 
> had thought that it would crossfade between the square or sine out of 
> the principle osc and the sine through the timbre wavefolder - but it's 
> not clear which is which, or even if that's it, since I don't see a 
> waveform select switch on the principle oscillator on the front panel:

The Order control fades between the ouput of the wave folding Timbre 
section and the output of the saw/square shaper.

On the scematics you'll see that on page 3 the square and triangle 
signals come in on the left and you see the two outputs on the right. 
Page 4 is the order section which is a crossfader between the 2 outputs 
from page 3.
> 
> http://www.buchla.com/historical/b200/images/259a.jpeg
> 
> Such things need figured out if, for instance, you're planning to keep 
> an undergrad busy by having thenm clone bits of a 259. Not that I'm 
> planning on doing that or anything.
> 

be nice.

Mark