Thanks for Sifus input

, I only manage afford for OEM thing cause my budget @ <= 1.5k only. I m not good in Audio world, learning bit by bit, hopefully sifus can leak abit your expertise to benefit Jr here.
I beleave 3 ways passive setup, are not easy to setup, and many things to consider, thinks, calc, .......more things to learn and play. of cause, that wht you said more FAN (troublesome) = More FUN

My concern
(1) SQ - Vocal & Instrument (Pure Audio) which one better
(2) Passive XO which one better, can get better SQ
(I got no idea about Vifa 6.5" comp. kit, never experience b4)