2X i think the older crossovers were part of the terminal cup whereas the newer models have the crossovers screwed to the inside of the speaker. Trust me they are a real beotch to get out of there, they are screwed on before the speaker is glued together. With a bit of skill you could modify things to add a more current crossover though its unknown by me if the drivers thiel/small parameters have changed. If the OP is not bothered by the sibilance alan speaks of then all this is really moot. i used a crossover design program to build crossovers for my home made speakers with axiom drivers and measured all the thiele small parameters then listened and changed things till i was happy. I dont know how they sound to anyone else but im happy LOL.
