Sharing a little programming trick on the OB-X8 I discovered.
As implemented in the OB-8, the Page 2 voice detune feature detunes both oscillators by design. It's a great feature! In addition to voice detune, however, detuning at the Osc level would further mimic the real-world tuning characteristics of the vintage units, especially the OB-X and Xa since their auto-tune routines were not as precise as the OB-8. On certain OB-X8 patches, I've been missing those subtle Osc beat variations within each voice.
Until now...
Here's the trick: First bring up OB-Xa preset A1 as it's easiest to hear osc beating on a brass patch with no LFO modulation. Then set the Osc 2 Detune knob to zero beats and play. The oscillators should be very tightly tuned across the keyboard.
Now go to Page 2 and scroll to Osc 2 Tri. Xmod, the set the value somewhere between 15-25. Now start playing a single key and listen and it cycles through the 8 voices. Notice the Osc beating is slightly different for each voice! You can experiment with the Xmod value and Osc 2 Detune knob, going back and forth, changing the values until you get it exactly as you want.
Try it out!
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