Sonus Faber Extrema clone

I haven't really spent any listening time yet, I am kind of sick of seeing them. I was on vacation last week and put in at least 5 hours each day working on finishing them. The very little time I have listened to them, first impression, overly bright! Definitely need to work on the crossover. I would also like to try a set of Seas W22EX001 woofers, same diameter and bolt pattern
 
Just picked up a set of Seas W22EX001 woofers and installed one and liked it, asked my wife who is just as content listening to the audio on the TV and even she said the Seas woofer sounded like Dianna Krall was "right there"
Needless to say, I installed the other driver to begin listening.
 
With the Seas woofers installed.
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It looks really impressive. Very nice craftsmanship!

How did you do the filtering? The W22EX001 has a nasty resonance starting at 3 kHz, with major peak at just before 5kHz. From how it looks, it's only a 19mm tweeter? Those usually cannot be crossed very low. Also the 22cm cone starts to beam before you cross it. So how is it done?