I haven't had time to dig real deep on Logic yet. I have been a PC Avid and Pro Tools user and have just switched and tried my first paid project on the Mac. I have really just used it for some sound beds and voiceovers. I have been concentrating on learning just enough to get my job done. From what I have seen so far Logic is a steroids version of STP and then some. It will import video and has features and abilities that STP does not. I don't know off the top of my head what EQs and such it has that STP does not but Logic is bound to be more powerful as its main function is audio only program. I do recall that there are several EQs to choose from. Surely one of those - maybe a parametric - would at least make your fan problem better. Unfortunately, sometimes bad audio is bad audio but you should still be able to make it better.