My speakers are also bi-amp capable and I know as a fact that the crossover inside the speaker is actually two crossovers connected by the external binding strap. Internally there is a low pass crossover that connects to the lower binding posts and is for the woofer and there is another crossover with it's own low and high pass for the mid and tweet. I also bi-amp and feel there is a great benefit if you can adjust the gain to the amp feeding the woofer. It just allows you a bit more control of the bass which seems to be the biggest problem in most rooms.