Nothing is sturdier than a ring radiator

Mundorf has requested I test their ATM's, I looked at price and scared me off.
I have no cash for high priced ATM's right now.
Tell ya what I;'ll ask Richard Gray tomorrow, he knows what sonics i am looking for
I'll ask him 
pros /cons of 
Compression vs Mundorf's ATM..
ohhh just cked
91db = dinasaur, its below the <<Golden Threshold>> 94db sens.
+ The price wayyy out my budget. 2 strikes ITS OUT.
https://www.madisoundspeakerstore.com/air-motion-transformers-amt/mundorf-amt19cm1.1-c-air-motion-tw...

Until you compare to the Viawave 
matched pair ribbons from Russia.
Check out HiFi Compass..while your there read about the Purifi drivers. Tom

@mozartfan,
ATM's, That's where you get your cash. AMT's, That's where you get your sound. lol
A ring radiator, like a JBL 2404H compression tweeter, will have better dispersion and dynamics then an AMT tweeter. That said, the AMT tweeter will have a higher frequency response then the JBL 2404H tweeter. Like all things in audio, it is subjective. See the link:  https://usspeaker.com/jbl%202404H-1.htm                                 

<<Higherb Fq response>>>
~~~~~~~~~~
NOt even slight bit interested in the highest registers, My classical cd collection/LP collection has rarelya  few notes in the high fq register, 
Like Richard Gray mentions, 
<<<AMBIENCE>>>
This is the most critical word when discussing tweeters, or any driver for that matter.
I am more than confident to claim as my  mantra
~~~The higher the sensitivity, the superior dynamics = high fidelity will result~~~~~
Audiogon members need to confront the new technology.
Why live in old doctrines and dogmas.
The entire speaker discussion revolves around 1 central concern. 
~~~SENSITIVITY~~~~~
I do not wish to repeat myself over and over 1000 times on this board,
But here it is in a  nut shell
~~~Speakers are everything in a  system, = most critical component~~~~
~~~~Sensitivity rating is everything in a  speaker design/performance/voicing~~~
Speakers Most critical component in any tube system. 
Sensitivity Most Critical in a speaker design. 
My objective is to bring the audiophile community into the 21st Century  by making aware 
 as to what constitutes
a  true high fidelity sound system. 
FR/Compression combo is the 21st Century speaker. 
All else is dinasaur.

You guys are really rummaging around in the garbage. The best tweeter is no tweeter. ESLs rule.