My understanding of bi-wiring, and what is said in both my Sunfire amp and AL-III guides is separating the high and low frequency legs (remove jumper) and using the SAME amp to drive the different legs (so the amp gets the entire spectrum). Indeed, the Sunfire, with its current and voltage outputs for each channel says you should bi-wire ribbons using both legs, with the current source to the ribbon, and the voltage source to the woofer. There is no crossover in this application, and no separate amps.
BTW, the phase relationship might not just be 0Ã‚Â° and 180Ã‚Â° degrees. It could also be 90Ã‚Â° (not likely) and 270Ã‚Â° (3rd order). This, my friends, is what I believe is the phase relationship of the woofer system, and no amount of switching polarity is gonna fix that.
So, if you're gonna disable the passive crossover, do it entirely! Now, there's the nonlinearity of both the ribbon and the woofer to contend with, which the passive crossover smoothed out. You're gonna need some equalization there!
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer