200e

On Jan 17, 2009, at 10:43 AM, John Loffink wrote:

> Can someone confirm for me that Buchla 200e tuning is _exactly_ 1.200
> volts per octave?


i assume you're talking about the 259e and 261e? the 260e has a weird  
scale that's something like (i think) 6v/octave; i have a preset saved  
for that and i can verify later today.

the 222e lets you specify a voltage in hundredths of a volt. and if i  
were to tune it to something like

0 0.20 0.40 0.50 0.70 0.90. 1.10 1.20

and patch it into a 259e/261e with the cv input turned all the way to  
the right (and no pitch modulation) this would come out sounding like  
a major scale.  and

2.40, 3.60, 4.80, 6.00, etc

are octaves above.

so i can't verify that it's exactly 1.200, but i can say it sounds  
close to 1.20. i can take readings voltage if you'd like more  
preciseness? i don't have a scope right now so i can't definitively  
say that an increase of 1.20 volts is exactly one octave.

also, i could take readings from the 225e if you're curious about the  
voltage that outputs.

thanks,

-jon

"There are no differences but differences of degree between different  
degrees
of difference and no difference."
- James, William. "Subjective Effects of Nitrous Oxide." Mind. 1882;  
Vol 7.