Im in the middle of putting a new system in a lexus is250. Im using B2 rage 6.3 component speakers for the doors. I will be using the passive crossover that comes with them. I have never done it this way and trying to figure out the wattage that i need to supply to the crossover. I want to run a 4 channel amp for the doors so that each door is on a separate channel. Any help would be very appreciated.