B&O

A gift from my Dad, this Beolab 5000 Bang and Olfsen Amplifier. He is clearing out his attic and trying to get rid of some of the stuff that he's spent his life collecting, salvaging and hoarding. I'm glad I got this amp (even though I have no way of connecting it to my speakers at the moment - I'm dying to hear how it sounds). . by the way Dad, its the B&O speakers that I really want.

Anyone know how to connect the speakers - its a weird connection?