If you are using the balanced outputs of the Marantz, it has the hot pin reversed compared to US and European balanced components. Do you have a polarity switch in the signal path? Some pre amps have this, I had the guys that make the Sonic Euphoria pre amps custom make a set of Cardas XLR cable to fix this on my Accuphase CD player I used to have. Any less complicated ideas to enhance the crossovers on the Maggies? I finally settled on a 6 foot pair of Kimber 8TC's for the highs and a single pair of PS Audio Statements (spades on amp, bananas on Maggies) for the low connection. thanks-