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What are the differences in Tweeter materials?

I am curious,

Is there someone that could tell me about the differences between the various materials out there that are used to make tweeters? Both soft and metal type.

What are the materials used in each and what are the sound differences both positive and negative?

Soft Dome Tweeters:
Soft dome, Silk dome, Cloth dome, Polymer dome, Polyamide dome and Textile domes.

(I am very confused in particular between Soft, Cloth, Silk, and Textile?)

Metal Dome Tweeters:
Aluminum, Titanium, Beryllium, Diamond coated, domes and inverted.

Thanks!
mezzanine
kijanki's avatar
kijanki
3,575 posts
 
Steve Mowry says in the article "The Whole Truth About Beryllium Diaphragms: -

"For a given geometry the first bending (break-up) frequency is proportional to the material Speed Of Sound, where the speed of sound within a material is defined as the square root of the YoungÂ’s Modulus divided by the Mass Density, (m/s); the higher the better. However, the Mass of the diaphragm must also be considered. Then the ratio of the Speed Of Sound to the Mass Density can be used as the materialsÂ’ acoustic figure of merit, (m4/kg/s); the higher the better."

After that he shows values of "Acoustic Figure of Merit" for different material (higher the better)in m4/kg/s

Berillum - 6.97
Diamond - 4.92
Aluminum - 1.86
Titanium - 1.13
Steel - 0.63
zd542
5,339 posts
 
Mezzanine,

How come you didn't include camel hair tweeters in you list of soft dome materials?

Kijanki,

I think you just P**** Off quite a few speaker companies. Looks like you just cracked the secret industry list price multiplier formula.
mezzanine OP
115 posts
 
Zd542,

Something I said in my post that offended you? Do you really have to respond in such a rude manner to a normal question I asked?
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