Tom:
No, I'm talking 7.1. Basically, just replacing the standard QS-8 side surrounds with TWO per side, running the same channel of audio and hooked up in series or in parallel with the other. Like this:
It would "spread the sound" even further along the wall in a deep room and maybe two of them outputting on each side would help them to keep up with the raw strength of the 80s and the 600s.
Ooops, I forgot to put the subs in the graphic... I was rushing!
Just use your imagination and say that I didn't put them in there yet 'cuz I didn't have time to calibrate them.
