I was playing with my Audyssey MultiEQ Pro kit this weekend and couldn't decide if applying midrange compensation (a dip in the 2 kHz region of the target curve to account for directivity changes around a typical tweeter-to-midrange crossover frequency) made the calibrated response better or not.

I wonder if Dave could chime in on at least the theoretical advantages and disadvantages of applying midrange compensation for Sierra Towers / Horizon with RAAL tweeters. I don't think the exact crossover frequency has ever been confirmed, but I'm assuming it's somewhere around 1.8 kHz as RAAL recommends for 70-20XR. Audyssey Pro also allows to shift the MRC dip from 2 kHz to any desired frequency, so that's also an option.