Are ferrites effective for cabling?

I do 32 tight loops of 18 gauge around a 3/16" dowel to make a RF choke to stick in the Tweeter circuit in my Magenpan 20.7 speakers. 
Originally called the Al Sekela tweak, I modified the idea to be just a home made choke. It works great. and makes the treble from the tweeter smoother and better sounding. Since the ribbon is such a large antenna.... etc. Plus the fact the Magnepan tweeter is still effective near the 100,000 Hz range..

Thanks everyone for your comments so far, at least the germane ones.  As I suspected is the case with this topic (and most of the others) there is a whirlwind of opinions, both good and bad.  What I am gathering is that there is at least a possibility that they can help a little with noise.  I have a very minute amount of hiss coming from the speakers (I have to put my ear almost literally on the speaker grills to hear it) but the AC hum has been eliminated with the Tice.  I have no problem with a little experimentation, shoot, I did it throughout high school and college, so why not, right? ;-)

Just a brief note. Hiss isn’t really the kind of noise that ferrites address. Assuming that ferrites worked on audio cables, which they don’t.  Carry on. 🕺🏻

Alright, geoff, that begs the question is there a way to eliminate hiss from the signal path?  I probably should have started with that question, my apologies.