I am having pitch issues using the x-mod, every key sounds different. Without x-mod the oscillators sound fine.
The Osc 2 Tri Xmod setting in Page 2 is set to 0.
I am using firmware 2.01 and did a full calibration as mentioned by Oberheim. Is there a solution for this?
It is not a bug. X-Mod from the front panel duplicates the implementation used in the vintage OB-X, which has the same behavior. It is best used in unison mode.
If you want all the voices to have the same pitch, use Osc 2 Tri Mod under page 2.