Doable or not? Test run active 3 ways speakers in passive 3 ways setting

Just join and first post

I am running passive FR in my car, the crossovers are inside my door. If I want to head to head comparison passive vs active performance without changing too much, is that doable to set up from
As is: unit Pioneer 80prs (simple DSP w F+R+Sub time alignment/EQ) to As 100.4 to 3 way passive speakers (w crossover inside the door)

To be: unit Pioneer 80prs (off time alignment/EQ) to DSP Audison Nove to As 100.4x1 and As 200x1 + add a 3 to 1 speaker line to combine TW, Mid range, MW signal together to the old passive speaker line to the old 3 way crossover and then to 3 way speakers
*Keep sub setting as usual

Variation including 1. better DSP 2. more power in amp 3. Signal of TW + Mid range + MW still go through crossover

I expect item 1+2 are normal upgrade items which usually happen from passive to active. Take as a MUST benefit need to be evaluated during comparison. However, what about processed signal go through crossover... should be OK, right? Any side effect that I should consider or I already make myself like idiot? Someone did it before?

Thank You


Tim
 
If I understand you correctly.

You want to combine the three amplifier channels into the one passive crossover that then feeds the three speakers.
Is that correct ?

If so then you need to read up on just what an active system is and how it works.