I am also interested in obtaining a .cal file for my USB mic. I got a Nady USB 1C cardioid so that I can make directional measurements of my dipole speakers. Though initial measurements are quite promising as to precision.
I suspect some FR correction may have been done onboard to deliver a nominally flat response - beyond what is available from an analog version. Otherwise, they would not have quoted a useful response of 20 to 20K while using a 19mm diaphragm rather than a 1"+ as they have in their better undigitized mikes that approach good extension.
And ehous31900, since you are all digital and have no analog sources from which to lose resolution, why don't you tear out the crossovers from your speakers and biamp or triamp? You can do an order of magnitude better job with a digital crossover than with a speaker level crossover. You get the following benefits:
1. far lower strain on your amps makes them sound way better as they avoid wasting energy on the back emf of the crossover components.
2. You can correct all phase errors like you are correcting room modes and FR abberations.
3. Match speaker drivers better to each other and their crossover slopes.
4. You can have that midrange magic tube amp (or whatever) on your upper drivers, and that bassmaster kilowatt arc welding amp on the bass. With the digtal crossover there is no phase or gain issue with different amps.
If I didn't like analog so much more, that is what I would have done years ago.
