Single Speaker Wire vs. Bi-Wired
This graph shows the reduction in IM distortion products when using two separate speaker cables to the separated crossover sections of a speaker, otherwise known as bi-wiring, compared to using a single speaker cable. - - - - Only the single cable vs. the tweeter cable is shown here for clarity.

The graph depicts curent distortion products.
The distortion products depicted are detected using a current probe, and consists of current distortion in the wire. - - - The current is what moves a dynamic speaker, and is involved with driving most electrostats via a step-up transformer. - - - - Current produces a magnetic field, and my theory is that it is the reduction of the intermodulation of the low frequency magnetic field with the high frequency magnetic field that provides the great reduction in IM distortion products measured.

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