Cause some people want to and like to.😁 I never owned Chorus ii and when I bought them of Craigslist did not dislike them but felt the Fortes I had just sold to a good friend sounded better. So I tinkered with the Chorus ii and now have them sounding much better to me.
audio engineers, if what sounds good to them does not sound good to me then I will tinker. I will tinker cause I like to and maybe improve the sound of the speaker or system to me. What everyone else does to their speakers and system is up to them.