Crossover help


hello forum,

i wish to build a coax system with the 12cx eminence .The tweeter is the cp380m from beyma.I measured up the frequency response of the system at 1m in a 125 liter enclosure.

My questions are :
where would you start to design the crossover?
which crossover point?
what to do with the rise at 10khz?

Thank you very much for your help!

frank



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