The ZERO-Autoformers can be connected to your existing speaker cables for longer runs. Use a set of binding posts to connect together your existing speaker cables to the colored pair of ZEROs leads for the desired speaker impedance multiplying factor.
2x = YELLOW (+) BLUE (-)
3x = YELLOW (+) BROWN (-)
4x = GRAY (+) BROWN (-)
Notice that the music signal is not passing through the binding posts. Their quality is not critical since they are only being used to tightly hold together your speaker cables to the ZERO-Autoformer leads.
Suggested Binding Post Sources: