Wiardgroup

Hey all,

I have the Frack-rack Joyrider Dual-BORG filter which uses the same 
pcb as the original Borg, but in a "not-as-populated-as-a-300-series" 
format. Can anyone tell me which pcb point the "key follow" inputs go 
to? I am trying to modify my module to have this extra set of CV 
inputs. Thanks folks!!!

Thomas

--- In wiardgroup@yahoogroups.com, "djthomaswhite" <djthomaswhite@y...> wrote:
>
> Hey all,
> 
> I have the Frack-rack Joyrider Dual-BORG filter which uses the same 
> pcb as the original Borg, but in a "not-as-populated-as-a-300-series" 
> format. Can anyone tell me which pcb point the "key follow" inputs go 
> to? I am trying to modify my module to have this extra set of CV 
> inputs. Thanks folks!!!
> 
> Thomas
>

Sorry Thomas, I did get your e-mail. I am finishing up 15 custom 300 series modules in 
addition to the 1200 production. There is a really beautiful faceplate design I will post 
pictures of when finished.

Look under the CA3046, there is a row of resitors, which are the control summing nodes.
I had to change the resistor values to work with the 150K joystick pots. They are not the 
same as a 300 module.

The two outside ones connect to pads labeled J21 and J22. Resistors R114 and R119 are 
not populated on the 9 Joyriders.

J21 and J22 would be the Key Follow inputs. Add two attenuator pots and populate R114 
and R119 with 100K resistors. This will give you another variable input to the summing 
nodes (where the control voltages get added together)

Key follow doesn't really mean anything for the Joyriders. The curve is very bent because 
the resistors are all 10 times larger because of the high value of the Joystick pots.