You dont know because you dont know what crossover point is best in your car. You are literally buying a scratch lottery ticket with passives hoping to god it works. But you'll get weak to shitty results. Reason why you want active networks is so you can choose the crossover point as you tune. for example if you have a really harsh peak at 4000hz, you can leave a crossover gap between 3500hz for the mid and 4500hz for the tweeter along with adjusting the slope accordingly. This gap doesnt mean your system wont play it, it means its attenuated and naturally smooths out the frequency response in a way that cannot be achieved at all with any sort of EQ. The thing is you don't know what crossover points are best until you are at the final stage of the system aka the tuning. It can be 2.7khz, 3.8khz, 6.5 khz, etc.... Every car is completely different which is why you get a big mix of reviews on
amazon and stuff why a pair of passive components sounds godly vs the same components in another car sounding like straight garbage. Crossovers are not something you ever want to cheap out or lazy out on if you appreciate music.