These are set up for tri-wiring. Was that the SDE edition? Mine have the AC ribbons, but only bi-wire.
This is my understanding of Special Digital Edition. It could be done with an external crossover or a modification of internal crossover. Only the tweeters passive crossover was used and the bass and mids were driven directly. A Behringer Ultradrive Pro DCX2496 electronic crossover was set up to divide frequencies vice the internal crossover and amplification was then provided directly to woofers (low pass), and mids (high pass), the same high pass amplification going to mids would go through the external (or internal if done that way) tweeter crossover (this protected the ribbon tweeters from getting fried). Good post concerning here: https://www.audiocircle.com/index.php?topic=63025.0
. For my RM-40 it has three posts going directly to the drivers and requires an external crossover. It could also be done with just two posts, but internally the bass and midrange passive components would be jumpered past and tweeters would still be used.
For the RM-2 being sold you would have to actually go into the speaker to figure how it was done before putting an amplifier to it.
IMO, DCX2496 and SDE is a significant improvement, but with most of us having fairly high end consumer equipment having a $300 pro gear doing A/D and D/A conversion is an area where performance can be improved. The DCX2496 is great to find your crossover points and levels for your room as it is programmable and xover points/levels can be changed with a few key strokes particularly when used with some of the sophisticated tools like Room EQ Wizard (REW) a $100 microphone and your ears. After I got everything dialed in with the DCX2496 and REW I replaced with a Marchand Electronics XM-44 active crossover that does everything in the analog domain and is in keeping with the rest of my gear. Really nice unit, love that piece. Our own VMPS AC contributor John Casler happens to be a Marchand dealer (shameless plug) and if interested you can ask for the "VMPS friends and family" discount.