Can Biwire speaker cables be used on speakers without biwire terminals?

My new speakers (Magico) do not have the four binding posts, only two.  Thanks for your help.
yes they can unless terminated with bananas...
So I would gang the positive spades together on the + and gang the ground spades on the -- ?
Yes.Both + together on the + post.Both - together on the - post.
You can put both spades together on the speaker terminals or strip the spades off and re-terminate with one spade on each leg.