the soundfonts for the Alpine set are fully contained in the original chipset, so
it is just the set programming you need to find to hear them...
nothing special needs to be loaded... if you study up the programming
you should find the Morino sample set or the other German set, i never
was able to identify which accordion they sampled for the second German bank...
it does have sampling to the Sterieche level on Bass (which, on the FRx series
could be used/mixed with ANY treble waveset and when combined with
the TUBA gave you some real WHOmping OohmPa
i do not know how much Programming power they have allowed on the 4x
the Dallape sets DO have their own Waveforms, which need to be loaded
into the user RAM area(s) available for extra stuff, then the shift programs
that take advantage of the Dallape samples will work properly