I agree with fmw, but if you want to try it out and have the cables for it, then go for it. My view is that you might as well prove it to yourself...as long as it's easy and inexpensive to do, that is.
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Because the Marantz will be sending the same signal out through either connection, it doesn't matter which one you connect to the LF or HF input. Just be sure to remove the metal connection between the two terminals on the speakers! Obvious to most people, I think, but I wanted to mention it because other folks have asked about that before.
As fmw was saying, don't expect much if any difference. It doesn't hurt to try, though.