No electrical knowledge is required.
Just common sense.
How does a single electrical signal from the receiver carrying full frequency info magically get split into 2 distinct signals carrying separate frequencies within the same wire?
The wire has no intelligence, no circuitry at the split point.
However, the crossovers in the speakers do because that is what they were designed to do.
So how does biwired wire manage to accomplish such a feat?
The concept of biwiring exceeds the laws of physics, period.
Merry Christmas.
