Binding Post Loose tweeter connection.

Also check the post straps that run between posts to bridge positives and negatives for contact or fractures. Seen those be an issue as well. If the post is bent far enough you might not make contact when screwing the post nut down. This you can test by taking a short piece of wire to jump the lower to upper of the same polarity.
What cable connection are you using? Spade, banana or bare?

Thanks for all of this information. I bet you have the answer.

I was using Acoustic Zen Satori's with banana. I don't use these speakers anymore. I was going to set up a kitchen system and use them at some point.

Sounds sick fix it asap!!

File a claim for damage, if you can. Never except anything that shows signs of damage as that could mean there are other potential failures waiting to happen. If you're going to fix it, expect other problems down the line. Good luck!