I need an aspirin...
@thecarpathian,
It’s really not that complex, and I guess I just did a poor job of describing it. My fault.
Instead of the speaker wires going from the amp to the L & R speakers, instead the speaker wires goes to the L & R subs. Then from the L sub to the L speaker, and from the R sub to the R speaker.
(So each speaker is sort of an extension of each sub.)
I am pretty sure that’s the way @grisly is now wired.
I only have one sub, and since I am using the balanced circuit from my preamp in to the balanced circuit of my amp, I used the RCA OUTs in my preamp to go to the L and the R RCA INs in my sub. I've been thinking about it since this thread started, and I think I can see where speaker wire connections from amp/to sub/out to main speakers MIGHT be desirable for myself. But the thing is, I was also thinking, the quality of signal that might give me to my speakers (which is the termination of that signal) MIGHT be affected by the quality of parts in the sub which I am sure is affected by the quality of the sub . . . and my sub is pretty much obsolete.