3-4 dB dip at crossover region: what should I listen for to hear it?

Thanks to everyone for the responses. So it seems like a narrow dip in spl at one point in the range is relatively inconsequential, at least in this instance. That's good to know.

@roadcykler, your post is surprising on an audiophile forum. Whay do I want to hear the dip? Because I want to be able to correlate the measurements with my listening experience. Or in this case, to learn that the the dip has little effect on what I'm hearing. If none of this was important, I'd just buy some old Pioneers at the goodwill and be done with it. I like learning about audio almost as much as I like listening to music -- it's how I put together a system that presents the music at its best.

If you can’t hear it, you can’t hear it. don’t force yourself to.

MANY speakers have ragged response graphs far worse than this, and they are often credited with being "revealing" and making the reviewer go through their entire music catalog again as if they are hearing the songs for the first time. Amazing!!

What actually happens is that the ragged response makes some notes pop more than others, tricking your ear into believing it to be more revealing, and it is, but only in some ways.

This is overall a very smooth measuring speaker, with the potential for excellent off-axis performance and dynamic range. JA at Stereophile has certainly praised a number of speakers that measured far worse.

@erik_squires , thanks for your input on this thread!

OP:  You are most welcome. 

Just, for the record, using a cheap SPL meter and frequency generator is so 1990s.  Get Room EQ Wizard with a calibrated mic (~$80) or OminMic and do it right. 

Alternatively, use your phone with AudioTools with something like the Dayton Audio phone mic