I will be running a Denon AVR-3805 as pre/pro, an ADCOM GFA-7000 rated at 130 x 5 into 8 ohms, 200 x 5 into 4 ohms, and 2 LSi 9 fronts, 1 LSi C, and 2 LSi 7 rears. I am going to run speaker wire for biwiring/biamping for all speakers to allow for future tweeks and gear changes. I have three options for wiring.
1) Run all speakers directly off the Adcom biwired.
2) Use the 7000 to biamp the LSi 9s and use the remaining amp channel for the center and the Denon for the rears
3) Run the low-end of all 5 speakers off the amp and amplify the top end with the receiver (full biamp)
To complicate things I also have a GFA-6000 (100 X 3 and 60 X 2 into 8 ohms, 150 X 3 and 100 X 2 into 4 ohms) that I could bring into the biamp mix but would rather not unless it will make a drastic improvement.
Which option will provide the most power to the speakers and best overall sound quality?
What is the nominal impedance of each setion of the LSi when the biding post jumper is removed?
Thank you in advance for your advice.