crossover function still not working after 14 years correctly

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I have 100% replicated Devialet crossover with MiniDSP Flex, using above mentioned formulas.

Are you familiar with Bessel filter?
https://www.ranecommercial.com/legacy/note147.html
https://ecstudiosystems.com/discover/tex...f-filters/

 

you show quite different slopes. crossover order determines slopes in dB/octvave and alignment /Q just the shape around the crossover point. The Devialet filter is not close to any common alignment. Even they didn't deny it