Upgrading with electronic crossovers?

I have a pair of AR 9's and want to upgrade the crossovers. I'm wondering if I should consider an electronic crossover or if should upgrade the passive crossover with equal components. Any suggestions? Lynne
Electronic crossovers are a significant upgrade but only if the speaker designer intended for the speaker to be upgraded in this fashion. Speakers are designed as a package. The components are complimenatary. If you change one part, the other parts might not be appropriate for the change you made. You should check with the manufacturer as to whether you should do this.

Improving the parts in the existing passive crossover might be a better choice for your speaker.

Also, as an alternative to upgrading the passive crossover, you should consider whether it might be bettter just to upgrade the entire speaker.