Convert Infinity Intermezzo 2.6powered to passive?

Speaker gurus: I'd like to convert my beloved Stereophile Class A-rated Infinity Intermezzo 2.6 speakers from their stock "powered woofer" design, into fully passive speakers.

I have no idea whether this is straightforward! They're in minty condition, so I don't want to even begin this it's not a simple and surefire "operation". (If it's not easy/sure, I'll sell them.)

Only the woofers are powered. So I guess it depends on whether there is an electronic crossover built into the woofer's amp. (I hope it's a regular x-over, with the woofer's amp running "downstream" of the x-over. Then I can just pull the amps out, and reconnect the x-over's bass output to the woofer, and be done, right?)

Could anybody advise me? Thank you...