Short answer = Bi-Wiring does absolutely nothing for your audio quality. Don't waste your money on the extra wire.
The extra inputs are just there to satisfy market demand for a misunderstood technique and for those who try to bi-amp. Even 99/100 people who Bi-Amp their speakers are not doing it correctly and gaining absolutely no benefit. What you are describing by using the extra outputs would still not be considered, true, bi-amping.
Good question though, we all had it in our heads at one time or another.
Last edited by Murph; 09/15/08 03:00 PM.