New Seas glass dome tweeters T27GL001-DXT

[WerT]

Test Bench: SEAS T27GL001-DXT Glass Dome Tweeter

This characterization addresses a new product that stands out for its dome material choice. That's the new T27GL001-DXT Glass Dome Tweeter from SEAS, the Norwegian manufacturer who decided to invest in adapting its high-end transducer design expertise, and source the glass diaphragm technology...

audioxpress.com

The new seas T27GL001-DXT looks pretty interesting. Apparently the Kii audio speakers use glass domes.
Measures really well to my eye. Also very high sensitivity which is handy

 

[Beave]

Finally, a speaker driver that is truly transparent.



I'll see myself out.

 

[ppataki]

Maybe it is just me but have you guys checked the distortion curve?
1% still at 4kHz? And below that even more horrid
That is way too high in my book, for a tweeter - especially at this price point

 

[WerT]

yeah the textreme satori kills it really in all aspects - i just thought glass was interesting.

 

[test1223]

Maybe it is just me but have you guys checked the distortion curve?
1% still at 4kHz? And below that even more horrid
That is way too high in my book, for a tweeter - especially at this price point

It is at 94dB at one meter other same size dome tweeter perform about the same. Like all hard membran speakers the decay is very good as a downside you got the membran resonance.

 

[Pearljam5000]

I'm sure it sounds great on it

 

[mhardy6647]

View attachment 534437
I'm sure it sounds great on it

so, I guess this album could go either way vis-a-vis these tweeters, then?

 

[mhardy6647]

... and come to think of it* -- what would playin' some Ella do to these tweeters?

________________
* Can you tell that there other, better things I should be doing right about now?

 

[Noricha]

The aluminum version of this tweeter is probably the one from the Kii Three, reviewed here: https://www.audioexcite.com/?page_id=2242

 

[DatSpeakerTho]

I'm mad I missed my opportunity to become a staple driver manufacturer so I could convince people $540 for a dome tweeter is worth it.

 

[Head_Unit]

Measures really well to my eye. Also very high sensitivity which is handy

Measures well except for a bunch of short waterfall hash...reflections in the faceplate and grille?
The sensitivity...not high compared to big waveguides I *think* but compared to flat face tweeters? I do like how the response droops towards the high frequencies but dispersion is more constant, because you could use Audyssey or something to flatten it (or not, kinda like a house curve) but you can't EQ narrowing dispersion.

Finally, a speaker driver that is truly transparent.

We SEE what you did there bad dog!!

Personally I think a glass dome will have a sound that is too brittle...

 

[Digital_Thor]

I thought that Grimm used a BE version in their top line....
https://www.grimmaudio.com/wordpress/wp-content/uploads/LS1_series_folder.pdf

 

[Doenerkunde]

I always wonder why the DXT waveguide was not adopted by more manufacturers, since it can be licensed.

I'm only aware of Seas, System Audio and Acoustic Energy ever using DXT tweeters.

Acoustic Energy:

System Audio:

My own speakers with the SEAS Aluminium DXT tweeter:

 

[test1223]

I always wonder why the DXT waveguide was not adopted by more manufacturers, since it can be licensed.

I'm only aware of Seas, System Audio and Acoustic Energy ever using DXT tweeters.

Acoustic Energy:
View attachment 545872

System Audio:
View attachment 545873

My own speakers with the SEAS Aluminium DXT tweeter:
View attachment 545875

There are earlier waveguides using diffraction as a beam steering technique.

In 2006 Acapella Fidelio II was released, which used a small waveguide with such diffraction technique. If you digg deeper I bet you can find even earlier examples of such waveguides?!

 

[Flaesh]

$540 for a dome tweeter is worth it

Here is a popular tromba:

and 3" glass phragm inside

, total €443.90 ($507?) for decent tweeter with waveguide