Just for the sake of an argument. The best tweeter I ever heard (and
managed to find) is Magnat plasma tweeter. One of the flame electrodes
burnt out once. (No other problems for several years.)No parts
available. By luck I found a jet engine repairer welder who rebuilt
it.
You guessed it Bloody Magnat quit producing them about
five years ago. I think someone in Switzerland makes plasma speakers
costing over 20,000 $ US.
Ludovic Mirabel

"Trevor Wilson" wrote in message ...
"MINe 109" wrote in message
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In article ,
"Trevor Wilson" wrote:

"MINe 109" wrote in message
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"Carl Valle" wrote:

I have run out of opinions to share with you all
If I come up with one I may share it
Meanwhile I think I'll catch up my BBC and Stereophile reading



The beryllium dome represents a quantum advance in tweeter technology.
Agree or disagree?

**Disagree. Apart from the fact that Yamaha got them working, more than
a
quarter of a Century ago, there are more interesting and potentially
superior tweeter technologies available. The ionic tweeter, for one.
It's
been around since the late 1930s and potentially offers superb
performance,
albeit with a whole set of 'interesting' problems. The ill-fated (but
utterly superb) HD-3P, piezo tweeter from Audax is, IMO, the best more
or
less conventional tweeter on the planet. A true pulsating hemisphere (as
opposed to a piston type driver), the HD-3P is bloody good. Beryllium
domes,
by comparison, are just variations on a flawed technology (ie: piston
type
drivers). Damned Harman killed off the HD-3P. Typical.

Interesting. A quick google brought up Heybrook Loudspeakers as using
the HD-3P for certain models, as well as at least one heart-broken DIYer.

**Considerably more than one. Anyone who has heard the HD-3P is spoiled for
pretty much any other tweeter.

Bloody Harman.