Is there a better way to create an equalizer curve for an IEM and headphones? I'm sure there is, but the only thing that I can find is a "dblogic SPL meter", but it seems like it is impossible to locate a dealer.
Can you rig something up to measure frequency response with a Behringer ecm8000 mic? The radio shack SPL meter? Is there an easy to use software package that will give you a tone and then you can compare it to the next octave tone?