It seems like softsynths (bass patches), I have to do a lot of severe EQ HPF work in order to remove unwanted frequencies. I don't understand, if I plug in my hardware synths and play bass patches, no problem.
Its because who ever wrote those patches, wrote them bass heavy. You are comparing different patches from different synths, so they will never sound the same, unless the patch is written the same exact way.
It like me cooking a steak medium rare, but you prefer it medium. To each their own. Preset patches are made by someone who has there own personal preferences. You are comparing 2 different patches made by 2 different people, of course they will sound different
I can play different patches of violins form 2 different sythns and one will have higher frewqunciers than the other oenj. Its natural and its expected behavior.
Cj