I think Scott's going to be out for a few days, so that may slow down responses some.
The binding posts on the 750 are standard -- standard spades fit. I've got my center bi-wired with standard spades at the 750 and bananas at the speaker. I also have cables for my mains that have large spades on both ends (bi-wired Paradigms, and Paradigm uses large binding posts), and the large spades also fit fine.
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Gonk