So the set-up is $45,000 X 2 for the subwoofers + $5,000 X 2 for JC-1s + $4,000 X 2 for Watch Controllers = about $110,000 for the whole subwoofing system?
That is a lot! (But I like the height of the Master Subsonic Subwoofer!)
Alternatively, an all-inclusive REL Acoustics No.25 "6 Pack" = $7,500 X 6 = $45,000. I still like the speaker-level connection method of REL, so the subwoofer system (albeit Class D) inherits some of the character of the full-range amplifiers.
Wilson Audio told me a couple of years ago that there is no way to tap a speaker-level output to feed the Watch Controllers.