Browsing donhighend and saw this link to some interesting new woofers and tweeters from a spin off company by the Sica founder, claiming Fibonacci principles applied to deliberate erosions to the cone through some new patent (will try to find it)
The 8" looks interesting, well they all do.
https://rsspeakers.it/products/w-220-50-fibonacci-2/
Think I found it https://patents.google.com/patent/IT202100017741A1/en
Claims:
I. Loudspeaker membrane or part of it in which superficial incisions or abrasions are made on the front surface, to form patterns capable of distributing the resonances of the membrane in the best possible way, minimizing distortions and linearizing the frequency response; II. Membrane or part of it as in the previous point in which the superficial incisions or abrasions are practiced only on the rear surface of the loudspeaker; III.Membrane or part of it as in point 1 in which the incisions or abrasions are made on both surfaces, front and back, according to figures which are not necessarily identical.
The 8" looks interesting, well they all do.
https://rsspeakers.it/products/w-220-50-fibonacci-2/
Think I found it https://patents.google.com/patent/IT202100017741A1/en
Claims:
I. Loudspeaker membrane or part of it in which superficial incisions or abrasions are made on the front surface, to form patterns capable of distributing the resonances of the membrane in the best possible way, minimizing distortions and linearizing the frequency response; II. Membrane or part of it as in the previous point in which the superficial incisions or abrasions are practiced only on the rear surface of the loudspeaker; III.Membrane or part of it as in point 1 in which the incisions or abrasions are made on both surfaces, front and back, according to figures which are not necessarily identical.
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