I just updated from a Late 2012 iMac to the new 2017 iMac and the sound quality from the internal speakers is very noticeably worse in the new model. I don't really know how to describe it, other than to say that it sounds "muffled" and not as crisp and clear. I tried installing equalizer software (Boom 2) to try and fix it, which helped a little, but it still sounds far inferior to my old iMac's speakers. Is there some kind of "burn-in" period until the speakers will sound their best? Or is there something else I should do? Thanks in advance for your help!