Spades act like electrical dams. Bananas provide the least damming effect. When biwiring, it is preferable to go one set bananas the other spade- or better still sans spade
biwire terminations
With 2 separate runs of speaker cables, is it advisable to terminate one cable with spades and the other with bananas at the amp? As opposed to connecting (pancake) 2 spade connectors at each terminal? Obviously, the terminations at the speaker would would be all spades or all bananas....