infection, one way to do this using the existing in-speaker x-over is:
* use a y-connector on preamp L ch
* connect one output to 1 mono driving the mid/hi
* connect 2nd output to 2nd mono driving the bass/mid-bass
* use a y-connector on preamp R ch
* repeat connection hook-up using mono3 & mono4.
each signal going into the Zodiac will be 20Hz-20KHz but the in-speaker x-over will filter the input & pass on the required signal bandwidth to the appropriate drivers.
Just looking at the Zodiac from a side-view photo, it looks like they have 4 pairs of speaker binding posts. So, one could have
* 1 speaker cable pair driving the bass
* a 2nd speaker cable pair driving the mid-bass
* a 3nd speaker cable pair driving the mids
* a 4rd speaker cable pair driving the highs
Needless to say, at $127K per pair, it's a cost-no-object speaker & getting 4 speaker cable pairs would not dent that buyer's wallet.
