So I've had a pair of ebony Strata Minis for several years. Decided to add an HTD Level III ebony center recently. In the process of hooking that up I realized I cannot hear any output from the midrange driver on my right Mini ... ugh.
So I started researching the forums and came across some post about bad tweeters and midranges in the Minis. At this point I'm worried about my tweeters too. Decide to order a miniDSP UMIK-1 mic & run REW for the first time ever. The mic came in today & I fumbled through the process. I was expecting at a minimum a major dip between 650Hz & 4kHz, but I get the attached graph which doesn't look bad to my (untrained) eye at all. The purple line is the right (bad) speaker and left is green. What am I missing?

Thanks in advance.