Vifa, Peerless, SEAS, Scan Speak - Tweeter series with extended Surround Roll and without Ferrofluid wanted

[tiefbassuebertr]

Approximately 15 years ago I had order 2 pcs. Vifa tweeter with large surround roll (new released at this time) but without ferrofluid.
I ordered here:
https://web.archive.org/web/20070217060009/http://www.vifa.de/
Unfortunately I forget the model naming.

At this time there are various basically series - two series without ferrofluid:

1) with phase plug - go to
https://web.archive.org/web/20070808054348fw_/http://www.vifa.de/produkte/DBXT300K.pdf
2) without phase plug (as mentioned in follow, but also without ferrofluid).

The follow mentioned models use all ferrofluid (type APGS11N)

Vifa XD270 series
http://www.plus-elektronik.de/shop/bilder_vifa/dbxd270f-4.pdf
Peerless DX25TG59-04 (first successor):
https://products.peerless-audio.com/transducer/58
https://www.lautsprechershop.de/pdf/peerless/peerless_dx25tg59_04.pdf
https://www.hifisound.de/Do-it-your...DX25TG-59-04-Vifa-XD-270-F-4-Fabric-Dome.html
Peerless DX25TG09-04 (second successor):
https://loudspeakershop.eu/pobieranie/dx25tg-59-04.pdf
https://heissmann-acoustics.de/test-vifa-peerless-xd-270-f4-dx25bg60-04/
Scan Speak D2604 series:
https://www.scan-speak.dk/datasheet/pdf/d2604-830000.pdf
https://www.scan-speak.dk/datasheet/pdf/d2604-833000.pdf
SEAS H1280-06 22TFF:
http://www.seas.no/index.php?option...ff&catid=45:seas-prestige-tweeters&Itemid=239

I want to know the type naming resp. order code of such tweeters with large surround roll and without ferrofluid.
Thank you very much in advance.

P.S.: This 10 years old thread under
https://www.diyaudio.com/community/...-without-phase-plug-ferrofluid-wanted.247341/
was closed - thus I start a new thread despite the same topic.

 

[motokok]

Here's one I've only seen in the German stores
https://heissmann-acoustics.de/en/test-seas-noferro-900-h1025-06/

 

[454Casull]

NE19 and NE25 series might apply

 

[PeteMcK]

Peerless NE25VTS-04 might be worth considering

 

[Rallyfinnen]

Or you remove the FF yourself

 

[tiefbassuebertr]

Thank you for your efforts - but this hints don't help - you have misunderstand my question in post #1 - I know all currently available NO-Ferro Versions - even the above mentioned.
I am looking for the type of Vifa's No-Ferro tweeter version in the outline of images from post #1 and not just any from the in post#1 mentioned brands.
this means with extended surround roll and without phase plug.

Because I know the sound character of this old Vifa model (that I had longer in use many years ago) I want to have the same again.
Therefore the question concerning type naming especially of the same.

 

[motokok]

The English translation is hard to read - don't know if you want your old tweeter identified or if you want a substitute.

Maybe check old catalogs and see if you can identify it from the picture and where the description does not say "magnetic fluid"

https://site.diy-loudspeakers.com/images/datasheets/loudspeakers/vifa/vifacatalog_s.pdf
https://www.madisound.com/pdf/vifacatalog.pdf


e.g. D27SG-05-06, DX25TG05-04

 

[markbakk]

Look for the one ending on any number between 0 and 4. I think you had some rebranded DX. ASE did that (essentially ordering 500+ units and reselling them). Removing the Ferrofluid yourself isn’t hard (as you likely know). Think the Scan 2604/83 is what you’re looking for, except for the ff.

 

[tiefbassuebertr]

good advice, thank you.
This seems to be the right model - now obsolete:
https://audio-hi.fi/en/vifa_dx25tg05-04-pd-332.html
https://web.archive.org/web/2013032...avesen.dk/Peerless_HDS830860_files/DX25TG.pdf
https://audio-hi.fi/download/pdf/Vifa_DX25TG-05-04_tweeter.pdf
This was the model, which I had order many years ago - sometimes still available in used condition or NOS
https://www.ebay.com/itm/124603073258
Successor according this datasheet:
http://audio-hi.fi/en/scan-speak_d2604-830000-p-330.html
https://audio-hi.fi/download/pdf/Scan-Speak_Discovery_d2604-830000_tweeter.pdf
the neodym version: D3004/66000
https://www.scan-speak.dk/datasheet/pdf/d3004-660000.pdf
not mentioned, whether with or without ferrofluid - according the value for parameter "Qms" without ferrofluid - so I guess.
I will ask Tymphany and Scan Speak.

 

[motokok]

Here a SS catalog to search if they say "fluid"

http://madisound.com/pdf/scanspeak.pdf

 

[tiefbassuebertr]

My email request to Scan Speak was forwarded to
Acoustic Systems Engineering (ASE)
ScanSpeak Distribution
Dipl.-Ing. (FH) Gerd Lommersum
Lerchenstrasse 9
72336 Balingen
(#49) (0)7433 9 97 40 33
mail: ase-lomm@t-online.de
web: www.ase-scanspeak.com

I read in his reply to me this:
The model you are looking for (DX25 equivalent without ferrofluid) is called D2604/833000 (Scan Speak).
The type D2604/830000 uses ferrofluid with low stiffness (low viscosity).

This is the second datasheet in post #1 under the D2604 series.