Unscrew the binding post. If in the post there is a hole, put the bare end of the speaker cable into the hole and tighten the nut. If it doesn't have a hole, take the bare wire and wrap it around the post and tighten the nut. Make sure they are tight.
Banana Plugs too narrow
I purchased high end banana plugs to use on my Coincident tube amp and my Coincident Victory speakers. The banana plugs are too “narrow” for the “hole” on the speakers. They slip in and out, with absolutely no connection. I don’t know why. Does anyone out there have an answer? Thanks much.