Oh it's definitely "old age" that's affecting you more than you thought.
"Old age" is contagious around here. I caught it from Ray.
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I just unscrewed the outer binding post on one of my M60s (took it completely off), removed the metal jumper, whipped out my trusty ruler, and measured the gap on the jumper, which would represent the spade you would need to go around the post. The gap is, indeed, 3/8 inch. I too found the statement "Axiom speakers are designed for use with the 1/4" spade connector" on the cables web page.
If you purchased your cables form Axiom, just give them a call. They'll make it right. You might also nicely point out their error.
