Dear Dieter,

Thanks for your reply but, unfortunately, this is beyond my ability, so can I send the modules back to you for modification

Thanks,
Matt

--- In Doepfer_a100@yahoogroups.com , <yahoo@...> wrote:
>
>
> To add a small negative CV offset one has to solder a resistor with about
> 4M7...10M between pin 13 of IC2 (the upper TL072) and -12V for the upper
> unit. And another resistor between pin 9 of IC3 (the lower TL072) and -12V
> for the lower unit. These pins are the summing nodes for the control
> voltages. With this modification the VCA should fully close in the linear
> mode.
>
> Please let me know if other user have similar problems. In this case I will
> instruct our production company to add these resistors
>
> Best wishes
> Dieter Doepfer
>