Archive of the former Yahoo!Groups mailing list: MOTM

OK, I just took a few measurements on two of my 300s and here is what I
found:

I had two VCOs set up on the exact same frequency.
I used the FM2 input as it is linear only. Of course, the FM2 attenuator
is on 100%

It took 0.507 volts on my meter to get an octave shift up or down, when
compared to the VCO with no shift. It took twice that, 1.014 volts to get
two. VERY linear of course.

The same voltage applied negatively produced the same interval in the
opposite direction. Exactly what we expected from MOTM.

I swapped the voltage (once dialed in) that produced one octave shift on
one VCO and plugged it to the other. Yes, you guessed it. They same
voltage produced the exact same shift on both.

The octave switch you planned would need to put out multiples of 0.507
volts per octave shift desired if using the FM2 input (that's my 300s, your
milage may vary).

This is one hell of a good idea that has my thoughts of modifying my 300
going right in the toilet (where they probably belonged to start with).

Thanks Nathan

Larry Hendry