Any quality company around $1k and up will do computer simulation
and frequency phase plots and account for peaks in the Xover .
thsts another area ,having owned a Audio store for a decade and being a die hard Audiophile that’s one area 95% of all mfg go cheap why because of $$ either Chinese capacitors or low average Solen caps , and cheap ceramic resistors
even inductors tiny Bobbins, or sledge hammer type .
I bought a 5 year old Dynaudio ,they are very good Jantzen open core inductors
caps and resistors ok , I put in muncher higher grade parts ,a solid 15% improvement many people don’t understand ,it’s the 🧠 or ♥️ of your loudspeaker ,
the entire Signal goes through there , Even $25 k martens ,Magico A5 and Wilsons , they use decent rated a 9 on the capacitir scale ,Mundorfs best caps are their supreme in several flavors,marten and Magico use the much cheaper Evo caps why ? They get 50% off .rule of thumb 25% no more goes into the build including packaging ,the rest R&D overhead and markup ,this too applies to electronics.
that’s why I highly recommended to upgrade any loudspeaker Xover you plan on keep a major Sonic upgrade.