[NXSTUDIO-DRUMMER]

With so many tweeter felt designs available, how does one desipher what's best for their speakers? I've seen two examples available on the commercial marketplace.
 
https://www.madisoundspeakerstore.com/acoustic-damping/dampers-felt-defraction-ring-for-tweeters/
https://www.russandrews.com/us/focus-rings/











With all these shapes out their in the marketplace, as well as different configuratons fabricated by individuals, how do you determine what's best for one's speaker?
 
Here are a few references, to give better insight with felt tweeter surrounds, and front baffle diffraction.

A few resources:
https://www.speakerdesign.net/felt/felt_ring_vs_blocks.html
https://www.speakerdesign.net/felt_amelioration/feltssenter.html
https://www.speakerdesign.net/audioXpress/diffraction/diffraction.html

McMaster-Carr or Grainger. An F13 industrial grade felt, for the DIY tweeter surround project.
https://www.mcmaster.com/products/f13-felt/
https://www.grainger.com/category/raw-materials/felt/felt-sheets-strips-rolls/soft-absorbing-dampening-felt?attrs=Grade%7CF13&filters=attrs