William Cowan and Tom Danley Featured in Stereophile

This is of interest to me as I own multiple AE Dipole 12 woofers and I will shortly be implementing 3 per side under some Joseph Crowe biradials from c. 500hz and down. I’m planning on low passing one of the 3 at 100hz to compensate for the OB roll off; are they doing something similar in the FS-2 ?
 
I love the look of the FS-2 speakers:

636501be013e6a78ac494d27_fs-2-1.jpg


dave