To add to the uncertainty about which terminals to connect the speaker cables to, there is a third possibility, which a number of members have indicated they prefer. That would be to connect one of the two wires in the cable to the low frequency terminals, and the other to the high frequency terminals. That is commonly referred to as a "diagonal" configuration.
Although some of the links Ghosthouse provided in his post above don’t work, I suspect the first one was intended to go to the following thread:
https://forum.audiogon.com/discussions/speaker-jumpers-and-hook-up-choices-questionRegarding the diagonal connection possibility, I stated as follows in that thread:
The diagonal configuration ... results in low frequency currents and high frequency currents each having to go through one jumper during their round-trip from the amp to the speaker and back. While when connecting both conductors to either the bottom or the top ... one of those currents would be going through two jumpers, and the other through none.
However, assuming good contact integrity, good quality jumpers, jumpers that are minimal in length, and assuming the equipment is in an equal state of warmup when the different configurations are tried, I have no idea why or if the diagonal configuration would sound significantly different than the other two configurations in most cases.
Good luck. Regards,
-- Al