FM with Voyager - help needed

The Moog Forum Minimoog Forum
1

I am kindastuck with producing FM based sounds with my new Xl.

By now I even think its somehow broken.

I fail even in reproducing the most basic sounds FM 1:2, 1:3 etc…

I realy have tried a lot of VCO1/VCO3 combinations with FM turned on.
here are the issues

  • all sounds achieved so far are nothing special - if I compare it with i.E my nord stage 2 basic FM
    the voyager FM sounds more distortd rather than metal, bell or so ..
  • as soon as I try to,play the keyboard up or down, the sound falls apart (clicking, changing character, etc.)
    no matter if keyb. tracking is on or off.
  • further more it seems sometimes, that VCO3 after finetuning a sweeter spot, cannot hold its tune, it almost feels like a self regulation
  • i cannot find a suitable waveform for VCO3, SIN is missing ?!


    Any help like, step-by-step tutorial patch for a simple FM sound is very welcome.
    Which waveforms to use, ovtave setting, keep sound persistent throughout the keyboard, …
    Just one patch to show that my unit works and that the real problem is me :wink:
    By now, I realy think there is something wrong with my unit.
2

The FM switch is exponential FM and a fixed modulation depth. Try using FM through the MOD2 buss, it is linear FM and you can vary the depth. Don’t expect accurate pitch ala DX-7 though, FM is only effective with rock-solid oscillators and razor-accurate modulation depth.