There are two approaches to bi-amping: passive bi-amping (what Audiolib describes - pull the jumpers off the two sets of binding posts and use two amps) and active bi-amping (when the crossovers are upstream of the amps and the signals coming from the amps go directly to speaker drivers with no crossovers in the path). Passive bi-amping is easy. Active bi-amping is a good deal more complex, typicall requiring the creation of the crossover networks and some "inside the speaker" re-wiring to bypass the factory crossovers.