Nord User Forum

mon8169 wrote:Quite an old thread, but I had to share that I just did your project (in 10 minutes !!)!!!!
I used magnetic rubber sheet to fix the ribbon to my NS. So far it works great!!
It's a pitty it can just control the tone and the filter frequency in the Nord stage Synth.

Very good!
Well, you can do also this: set the synth filter resonance into oscillation (max resonance) then map the morph to the filter frequency. The frequency now controls the pitch of the oscillation and so you have a pitch-ribbon or threremin-like device. Add a tiny bit of LFO modulation to the filter frequency too.

maxpiano wrote: I am not OK though with using it in parallel with an expression pedal, as discussed earlier im tne thread, because of the behaviour of 2 resistors in parallel (if they have the same value, the total resistance halves and so it may overload the NS2 input + the variation is governed by the non linear relationship 1/Rpar = 1/R1 + 1/R2)

I do not think it matters. Since the nominal voltage is provided by the synth and when the pedal is fully down you have a 0 resistance, having 2 of those in parallel makes no difference. It does however shorten the range we can modulate when you move one or the other, but it will not be overloading anything. I have used it endless times.

What I would never do is to put 2 keyboards Expression outputs through the same expression pedal with a Y cable because in that situation you end up with 2 voltages coming in. Maybe it does not damage anything, but I will leave it to somebody else to experiment.

Mr_-G- wrote:

maxpiano wrote: I am not OK though with using it in parallel with an expression pedal, as discussed earlier im tne thread, because of the behaviour of 2 resistors in parallel (if they have the same value, the total resistance halves and so it may overload the NS2 input + the variation is governed by the non linear relationship 1/Rpar = 1/R1 + 1/R2)

I do not think it matters. Since the nominal voltage is provided by the synth and when the pedal is fully down you have a 0 resistance, having 2 of those in parallel makes no difference. It does however shorten the range we can modulate when you move one or the other, but it will not be overloading anything. I have used it endless times.

What I would never do is to put 2 keyboards Expression outputs through the same expression pedal with a Y cable because in that situation you end up with 2 voltages coming in. Maybe it does not damage anything, but I will leave it to somebody else to experiment.

Yes, actually you're right about overloading, thinking twice the risk is not there, but still the problem of the non linear interaction between the two, maybe a matter of pinciple but not a big issue for the player.... I think I'll buy one of those ribbons and try

PS: Y cable to connect 1 expression pedal to 2 different inputs?? No way!

I don't use the Pedal and the Ribbon in parallel. Volume Pedal goes now to the Organ Swell input to control the volume of the organ. If I need to adjust the volume of the other instruments , I'll use the Level knob.

Mr_-G- wrote:

mon8169 wrote:Quite an old thread, but I had to share that I just did your project (in 10 minutes !!)!!!!
I used magnetic rubber sheet to fix the ribbon to my NS. So far it works great!!
It's a pitty it can just control the tone and the filter frequency in the Nord stage Synth.

Very good!
Well, you can do also this: set the synth filter resonance into oscillation (max resonance) then map the morph to the filter frequency. The frequency now controls the pitch of the oscillation and so you have a pitch-ribbon or threremin-like device. Add a tiny bit of LFO modulation to the filter frequency too.

Already did it!!

Hey...I know this thread is a bit old, but I need some help. I'm a musician with no electrical engineering knowledge, and I'm trying to build a simple CV ribbon controller for a few of my synths. Will this controller work that way without any other modifications? It seems like I would need to do something to adjust the scaling of the ribbon so it would be proportional to the size of a standard keyboard, but I have such a lack of electrical engineering knowledge that I'm having trouble figuring out how to even start doing that.

there's no need to do any adjustment. Just solder the cable terminals with the pins of the ribbon resistance.

Ramon