What set do you have ? Some are bi-ampable but most are not.You can run any set with a 2 channel amp The advantage of bi-amping is that during a bass hit if the amp channels that are driving midbass clip the tweeters are not clipped.If running a 2 channel and this happens the tweeters could distort or even get damaged. This is not a problem most of the time with todays high power amps.
Those are not bi-ampable using the crossover that came with them. If you want to cross them over actively you can but it is not needed. Just run the off a good 2 channel amp with a real 75 watts per channel