beryllium vs diamond


Hi guys, today's technology has brought us a new type of tweeter made of diamond or beryllium. Do you know what are the strengths and weaknesses of diamond vs beryllium? Which one is the more expensive? Has today's dome tweeter better resolving power than the venerable electrostat? Jim Thiel once said that dynamic designs will be getting better all the time and will probably surpass electrostatic designs.
dazzdax
Another example: Many highend speakers use Thiel&Partner ceramic units. I sold Avalon for over 6 years if time, even to some of my best friends.

These speakers have in common that they often can create a wide and deep stage. But......when you listen to intimate acoustic concerts in real you will hear how small voices and instruments are in proportion. I call it intimate sound.

When you play this kind of music on speakers with Thiel&Partner units you will hear that instruments and voices become bigger than in real.

The other thing you often audition is that with a cello or double bass it colours it a little. I call this: a mjeah. It makes these instruments sounds thicker.

In the beginning of this year we visited an audio show and many new speakers overthere used paper. I thought; What the F....It reminds me of audio when I started in 1998.

The demos were so poor, these days we have much better materials. I also don't understand why B&W is using paper in some of their speakers these days.

Compared to 1998 when I started in audio, the quality of materials has improved a lot. Often they still use older materials.
Schubert,,These Yamaha NS-5000's sound D$MN G$$D!...even through headphones!! Even on YouTube!! Sounds like High-End to my ears!!

https://www.youtube.com/watch?v=TlfCqjZmZq4 @@@@

https://www.youtube.com/watch?v=dd6NQNHhDk8 @@@@@

And they have even more YouTube Videos on these All New Yamaha NS-5000's !...Man..I love this hobby!! Thank You Yamaha!!
I so enjoy "the older material" Skaaning midrange drivers used in my loudspeakers. I suspect (with tongue firmly in cheek) the implementation must overcome their polypropylene pedigree.

Keeping to topic, my loudspeakers implement Accuton diamond tweeters (BD30). Years back I owned loudspeakers using the Accuton BD20. To me, the Accuton diamond membrane sonic character doesn't stand out in the sense of immediately calling attention to itself in a "oh, wow!" kind of way. Given the cost, my initial expectation was that it would. It's positive attributes are, really, quite subtle. It is as if the treble content of music simply flows. Complex treble content from multiple instruments retains the separateness of the individual instruments to an extent I've not heard with ceramic, ribbon, or soft dome tweeters. Clarity of ceramic and ribbons, but with an ease that is hard to describe.

I've never heard loudspeakers with beryllium tweeters, so cannot offer an opinion on similarities/differences versus diamond membrane.
My brothers now retired Bozak B313's had dual paper tweeters strapped over the 12" woofers...they were sweet and sexy and full of realistic treble. Application and execution matter more, plus they had massive magnet structures behind them. The crossover was all discrete components and weighed about 15lbs.
I love the Be drivers in the Paradigm sig s8 v2 but I kind of want to move away from it since I worry if it blows 1 day the Be will become a dust in the air.

Anyone like tweeters other than Be or ribbons ?