Doepfer

Hi,
So lets say I have a theremin module A178 and I want the entire range 
of control of the theremin to only affect one octave of pitch.

I imagine I can do this with a A129-3 via attenuation and offset, is 
that correct?  If the output of the theremin ranges over 5 volts 
normally (is this true?) then if I attenuate it it will range over only 
1 volt.... I hope.  Then I can offset the output so that the volt in 
question will correspond to the octave of my choice.

Is this all accurate?
Is this the best way to do this?

I think maybe it is also possible with the A138c using the offset 
function of input one.

Please let me know,
thanks,
Rafael