Magneplanar speaker terminals. is there an adapter to....

Jim, any regular sized banana plug will fit into the the Magnepan terminals. If you tighten them down, they might ruin the banana plug a little. You just need to be sure to back the set screw out all the way.

Magnepan sells an adapter to use spade lugs:

http://www.audioasylum.com/forums/MUG/messages/12/123297.html

http://www.audioasylum.com/forums/MUG/messages/12/123298.html

The reason they still use these terminals is because the best connector is no connector and if you can use bare wire, these terminals are fantastic.  And because they need to ship the speakers as flat as possible and regular binding posts would be stick out to far.  The factory posts can be, pretty easily, replaced with regular binding posts if you want.

I agree that most audiophile cables will have terminations, but again, if can use bare wire, these work great.

smotojo...if you are anywhere near Northern Colorado, I would be happy to do this for you, free of charge.

I was  a Magnepan dealer for many years and have done this numerous times.

I’ve never seen any crimp style binding posts, but maybe they exist. You would have to solder (4) wires, the positive and negative on both speakers.

You just need to unscrew the (4) wood screws that hold the aluminum back plate on the speaker. Be careful pulling it out, it might snag the fabric, just go slow. Once the plate is off, you can see where the + and - wires are and how the wires and stock connectors are attached. Just unscrew the small nut that holds the connector on and whole connector will come off. Replace the now open hole with whatever binding post you decide, (I recommend the Cardas pure copper posts, but you can use whatever).  Depending on the connector, you might have to enlarge the hole a little bit.

It really is a pretty easy mod, but just take your time. Sorry you’re not closer, I could do this for you in about 20-30 minutes or less.

Good luck!