Infinity Quantum 2 - crossover rebuild - parts

Quantum 2 crossover no bi-wire

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This schematic seems to show the non bi-amping version. Not sure if the one with 2 pairs of binding posts (rear Emit or not) has different values.

Still don't see how the same crossover can be use for 3 Emit and 4 Emit WITHOUT changing some of the values (resistor at least). But have not found ANY information or received input from others.