Re: Kent...how to eq SM57 to reproduce...
I'm not sure I understand the question ... :scratchch
What's flat on an SM57? Well, depends how you mike it, the 57's claim to fame (other than being indestructible, and sounding great) is it's proximity effect ... fancy way of saying that the closer you get it to the source the more it develops a bass boost ...around 150~180Hz. You really start to notice the low end closer than 8" to the source (I think the studioish window is about 2' to 1/4", which live greater than about 6" is really cutting into instrument isolation). Most cardioids have the effect, but the 57 really likes it, the other is the off axis response which is pretty much shared with other cardioids as well, but the 57 there to tends to be very even in it's rejection pattern (some mikes aren't). The off axis hi roll off starts about 2.5kHz, and I think it's down like 16db or so at about a 45 degree angle to source ... that's rough guess as I never measured one. Generally, closeness to source (proximity), axis to source(pointing straight at, or tilted away ), and placement in reference to the speaker voice coil (over it, or towards speaker edge) are your three main parameters for mike placement.
I assume your telling me that you have four quasi parametric bands of eq to play with (sweepable center EQ without bandwidth controls). Not sure waht has changed in your sound, but before added any EQ I would adjust the mike placement first ... then eq if needed. EQ targets woulds be, 180Hz, and if you go both to the lower side of 2.5kHz ...around 1.6kHz (somewhere around there), and then a bit above say 3.2kHz to 4kHz. with two more bands of EQ then you can kinda balance each one out, the lower one restoring a bit of presence lost, when the upper is pulled down; or the lower removing harshness when the upper is boosted some. You could use the fourth band for either a mud filter, or some other duty. Again, not really sure what you are asking here, but hopefully this will help some, as for mike placement a good starting point with the 57 is 5"to 7" from speaker grille, on axis, and about 2" in from the speaker surround to the edge of the voice coil. The reason I say that is, that you generally can sweep the mike thru that zone get what you generally want, and then tune the low end with the proximity, and the high/upper mids with the axis response.
Really can't be anymore specific than that, I hope it helps.
