I'm trying to get the unison pan spread to adjust the parallel filters but it's disabled. I have unison off. According to the manual it should be active but it only seems to work when the filters are in split mode.
Page 68:
"Pan Spread: The stereo width of the signal. As well as applying to Unison sounds, this parameter also applies to any Parallel and Split mode sounds so it is still visible even if Voices (see above) is set to Off."