I don't get it. If the speaker has separate posts for the upper and lower sections (and a passive crossover built in), why does running two sets of speaker wires from the same amp to each section improve sound over having an external jumper at the speaker? It doesn't make sense to me, since the same signal sees both sections. I guess I could see it making a difference if the cables were very crappy, but if you use good cables, this shouldn't be an issue. Also, if I were to do this, how would I connect the two sets of cables at the amplifier (assuming a 5-way binding post)? Using 12 guage, I don't think I can fit both wires into that little hole, together. Would it be OK to use the "B" post for mains on my receiver for the other cable? Thanks, Martin.