A better side view of how Paradigm has done crossover board to terminal cup interfaces on many of their speakers. You can see the area in the pics that the post drops through and make a fragile connection.
https://www.ebay.com/itm/313336963217?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&...
https://www.ebay.com/itm/313336963217?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&...