the mid drivers share the same capacitor in parallel
the resistors are a different value which changes it's
position for a specific frequency in the midband.
It is seamless , there are 2 versions of caps the standard are the excellent Auri caps and Caddock resistors.
The Reference Xover which is $700 more and that is not even retail they are practically giving it away for the retail is over $1000 for the parts with your choice of Dueland Copper caps or the Mundorf Silver oil Gold and Dueland resistors, which by the way are in the $28,000 Magico speakers Xover except the resistors, the Magico
uses Mundorfs the Duelands in the D-3 are better!