Here is an article that explains bi-amping quite well
https://sound-au.com/bi-amp.htm If you really want to get the full benefit you might want to consider active crossovers and by passing the ones in your speakers.
Do you have any idea of the amount of work required to do this correctly? For moderately price speakers, unless it's done as a hobby project, it would be a waste of time. Some of the work involved:
o Measure the T/S parameters of each driver
o Measure the response of the passive crossover
o Measure the overall response of the loudspeaker in quite a bit of detail
Of course you have no idea of the parameters used to design the speaker. You have have no idea how far the drivers are from spec. You have no idea how far the crossover is from spec. You have no idea how the entire loudspeaker would have performed if built to spec. You have no idea how the characteristics of the drivers was used as effectively part of the passive crossover.
You need to decide if you will just duplicate the speaker as built, determine how it would have worked had it been built to spec., if you can determine what that spec is, or just change the whole design.
You can next determine why you a spending so much time messing with $5 to $10 drivers and perhaps a nice monkey coffin, to attempt to improve on a $1k MSRP loudspeaker that had a manufacturing cost of perhaps $100 in the PRC.