I think Greg has it spot on.
Anyway, here's a final attempt to get you to see the wood for the trees, no winding up involved:
You may want to consider, when you log on to a forum, that you are discussing with other people who are real live human beings, with experience, knowledge, and preferences. Some of these people know more than you and can be learned from. In this case, on this specific subject, oedipus, Robbo, and SM have real practical and theoretical knowledge to give you, based on their experiences with using EQ in their own systems. At least two of them (SM and Robbo) routinely achieve really excellent sound in their own systems (I can't vouch for oedipus, but only because I've haven't heard his system, but he clearly knows a lot about audio, both theoretically and practically, and is always worth listening to). In other words, they know of what they speak.
You, on the other hand, have spent a lot of money and ended up with a harsh system. You claim swapping in a passive pre has completely altered the character of the system, but experience suggests that must be wishful thinking, a preamp change doesn't alter the fundamental character of one's speakers. You use speakers characterised by a recessed midrange, an almost inaudible top end, and one-note but deep bass, clearly designed for headbangers who listen to rock music at very loud volumes, but are not seeking the utmost in high fidelity. On this particular subject, your experience of EQ is so limited you don't even know how to get your mic working, or spot a wrong plot.
If you weren't so defensive and, yes, narcissistic, you might end up with a much better hifi, and make some friends in the process.
I'm an arrogant b.astard, very confident in my own abilities, over-educated, prone to academic point-scoring, but I've learned a lot about audio over the last few years from these forums, and met some really cool people too. Sometimes you need to take other people's advice, accept that other people know things that you don't. It's the only way to learn.
-- Ian