Snell J-III Question

Good Morning,
I just purchased a pair of Snell J-3's to pair up with my Luxman R-115 receiver, I have seen on some of these speakers a jumper wire between the double terminals. Can anyone tell me is this beneficial for connection as the previous owner did not have them wired like that and there is nothing I can find on line about the jumper.
                                                                                                               Thanks!
                                                                                                                       Doug