Yamaha CS80

Just tried to feed a sine-wave from an ARP2600 into the sub-osc-external-in on the back of the CS80. I controlled the amplitude of the sinewave by controlling the APR's VCA with a cv-pedal. That works very good for Oberheim-type of vibrato's.
I tried 2 settings:
+/- 40mV
+/- 400mV
and both work great by adjusting the external-in-knob on the back.

It would be nice to replace my 2600 for a foot-pedal with that function ;-) It would require an active (battery-power) pedal with adjustable speed. Does such a pedal exist ?


--- In yamahacs80@yahoogroups.com, "erikfromhere" <moogsynthex@...> wrote:
>
> Speaking about pedals, I like the way I can control vibrato-depth on 
> my Oberheims with a footpedal. I know, the CS80 has aftertouch to act 
> as a source for vibrato-depth but I find it difficult to use this on 
> chords.
> 
> I was thinking, there is an external input for the sub oscillator. 
> What if I take a sine-wave and use a cv-pedal to control the 
> amplitude of that wave (using a modular synth's oscillator and vca) 
> and feed it to the sub-osc ? Can I control vibrato-depth ? Does 
> anybody know what the maximum voltage is that may be fed into this 
> input ?
> 
> Why did Yamaha implement this external source ? Did they have a foot-
> pedal available that provided a controllable sine-wave ? I never use 
> any pedals with the CS80 but if it could control vibrato-depth I 
> would use all the time ;-)
>