Thanks for the pics... looks like the HT4s are bi-wired, or possibly bi-amped, but the jumpers are still in place???
anyone else notice this?
The wiring configuration is referred to as a "double-blind tri-wired connection".

Actually, I don't have any idea why they are wired that way.
I see Frank's "old rope" speaker wire also made the show.
Jim and Dennis look very happy, although I suspect that both of them and Jim's family and employees are exhausted.
Great photos.