i dont know what the pioneer's crossover options r? i too have the vifa pl7 and neo tweets. my kenwood hu is the top model but i wouldnt run its crossover settings. i got a ppi active crossover to run my system and future expansion. check the other threads. u may be able to get passive crossovers made from madison (again check the other links).
3way=midbass,midrange, tweet
2way=mid(trying to cover midbass and midrange), tweet
frequency range is generally 20hz - 20,000hz
for now my 2 way front stage will be vifa7" 100-3500, tweet 3500-20k w/ sub 100 and below but the vifa can go lower if i want, thus lowering the sub too. adding a midbass would cover 100-250/300hz with midrange and tweet handling everything else above.
