OP you can bi-amp using the internal crossover within the speakers, just remove the jumpers between the LF and HF terminals. That’s not how I would do it, but it is possible. For me, I would follow russ69’s advice. What russ described is not hard at all and would yield the best results. You can use any number of crossovers including DSP’s but I prefer analog crossovers. I’m not positive what crossover russ is using, but if I recall it’s a DBX223. Looks like the crossover frequency in the speakers you mentioned is 2.8kHz., but you should check your owner’s manual. Literally there are 100’s of choices for an active crossover. I’ve been multi-amping for 42 years using analog active crossovers and I will never go back to using a single amp again. Enjoy!