Strange tweeter

[skyra]

Hi fellas! My question is: Does anyone know anything about this tweeter? It is in a Swedish two way speaker (Proson), and while it looks like it is a ribbon, it isn't.... I took it apart, and it has a strange corrugated (stamp pressed) thin aluminum plate membrane, and is is driven around its edges the traditional way. The funny looking structure visible trough the mesh is a phase correcting element. And it sounds darn good, fast, sanappy and uncolored. Hefty piece, weighs almost a pound.
And beside some other Proson model it cannot be found in any other speaker.....

 

[planet10]

You tesed us with a description of the innards. Where are the pictures?

dave

 

[skyra]

Well, sorry about that but I forgot to take pictures when the front plate was removed, and I am not planning to take it apart again...
However I made a -not very artistical- drawing about the construction of the driver, I hope it helps to see how it works... 😎

 

[Freedom666]

Someone was gifting me a pair of Sawafuji drivers which look like this.

These are dynamic speakers with a high Q as the loudspeaker has a lot of voice coil copper utilized.

Maybe your tweet is just a smaller version of it

 

[skyra]

On this picture you can see a similar working principle driver from Furuyama Audio Labs. The Proson is a downscaled -"tweeterized"- version of this one.

 

[skyra]

Someone was gifting me a pair of Sawafuji drivers which look like this.

These are dynamic speakers with a high Q as the loudspeaker has a lot of voice coil copper utilized.

Maybe your tweet is just a smaller version of it

Yeah, once I had a few of those. They sounde terrible, "flat", lifeless, slow, mostly due to the high moving mass caused by the lot of copper in the voice coil....