Magneplanar speakers accept bananna plugs, but they have a little set screw which clamps the bananna plug in place. Actually, the best way to make the connection is to put the bare speaker wire (with no termination) into the speaker terminal, and clamp down on it.
Most speaker systems, in the crossover, have a resistor in series with the tweeter, so as to reduce its output as necessary to match the woofer. The Magneplanar crossover does not have any such resistor, but you have the option to use one if you like. Magnepan states that their speaker frequency response is flat without the resistor, but that many recordings are made with boosted highs so as to compensate for the typical speaker which has rolled-off highs. Such recordings may sound better if the Magneplanar response is similarly rolled off. They supply a 1-ohm resistor which, for the 4 ohm tweeter, amounts to 2 dB.
I use the resistor.