I've got a pr of focal 135v2s that have bugged me off and on and I couldn't put my finger on why. I would get a ringy midrange occasionally depending on the music, and I couldn't eq it out(Alpine 9887).

I finally figured it out, the crossover frequency is too low for me. Some midrange is coming from the tweeter! I hear some guitar and too much voice, and the tweeters are pretty strong, so I get ringing. The x-over has a db switch, but even at -6db it still rings. Weird, eh? The components are powered by a PPI 75x2 amp.

Is my only option to swap out x-overs?

 

you could play with enclosures as well, not sure on the "ringing" you're hearing, but some heavy EQing in the 2000hz range usually kills it nicely. If that doesn't work, you're looking at enclosure (where are these mounted and how?) or xovers (I doubt these are the problem though)

 

Sounds like you need a notch filter on the tweeter.

Although really for marginal cost you could add a 30x2 amp and an active crossover and ditch the passives altogether

 

Good ideas, I guess some tinkering is in order.

 

The built in crossover in the 9887 works nicely in a 3-way active setup.