Driver measurement - What kind of baffle?

[Black300zx]

What's the best way to measure a driver's f/r? I'll be taking measurements of my css wr125's and dayton 3/4" neo tweeters soon. I already have the enclsosures built. Should I measure them on the baffle they'll be mounted on, measure them on an oversized baffle, or free air? If I measure them on a baffle, I'll obvisouly have diffraction effecting the measured F/R. How do I seperate diffraction effects from the actual response of the drivers. I could just use a diffraction simulator to figure out the effects, but if I'm using speaker workshop to measure their f/r so I can design a x-over, how do I account for diffraction effects in the measurement?

[cjd]

Measure on the tweeter axis in their box, both drivers with the mic in the same place. You have everything you need in those measurements - driver placement (x, y, and z axis,) baffle step, diffraction, etc. Just work on the crossover from there.

C