I want to offer something that may surprise some people in this thread: a genuine concession.
The cable/crossover interaction is a legitimate variable that I think deserves more credit than the objectivist side typically gives it. The vast majority of us run passive speakers with crossovers, and a crossover is a reactive load. (Hence my choice of speakers never includes any such interference... ;-) ). Different cables present slightly different impedance characteristics to that load, which affects how the crossover filter behaves and how the amplifier sees it. In a genuinely poor pairing, you could theoretically drift into the ~1dB range — and that's audible. That's not magic, that's measurable electrical interaction, and it's real physics.
So my honest position is this: cables can matter at the margins in specific reactive load conditions. That's a much narrower claim than the high-end cable industry makes — but it's defensible, and I'll own it.
Even so, a zip cord of adequate gauge will handle the vast majority of those interactions just fine. The crossover doesn't care about the brand name on the jacket.
I came here to have an honest discussion, not to "deny" anything. Anyone who read this thread carefully knows that. I'll leave the characterizations others made about my motives without further comment.