Need help for Sarastro II

I need help for the optimum connection of spk cable to sarastro. There are 2 binding post on bass unit one is at upper side and the other one at down side. 3rd connection is on mid-high unit. Any body who can share his experience about the best connection alternative with jumper. Any experience about biwiring? Is it better than single wiring for sarastro? Thanks fır your helps.