Thiele Small Parameter like Focal Audiom 15AX from currently available

[tiefbassuebertr]

I am looking arround to low frequency transducers like Focal Audiom 15ax.
Especially the values for Vas (635 L) and Cms (the driver's mechanical compliance = reciprocal of stiffness, in m/N) so as Qms are exceptionell large and the resonance frequency f-res is very low (22,8 Hz). This value is by the use of cloth surround instead rubber very noteworthy and an indicator for a very low weight (mass) of the diaphragm (cone).
All this features saves an unparalleled combination of clean and tight bass so as a very low bass at the same time, if the camber volume is appropriate therefore.

Drivers with similar parameters that I know are the follow:
- Cabasse 55ND
Cabasse haut-parleur 55ND
- HKM XX-21
(formerly WESTRA/TESLA, see attachement)
- 2x McCauley 6258
McCauley.com : Products: Components > 6258: Specifications

Unfortunately the Cabasse 55ND is too expensive and the HKM XX-21 has to strong variations between the individual devices.
From the McCauley 6258 I use two pieces in one chamber. Unfortunately in the meantime very expensive in Europe (and amazingly not in United States), now twice as expensive than 14 years ago by German's old distributor "Sirius".

Which additional currently available bass drivers in this size have similar parameters (as close as possible to the Audiom 15ax for use in large cabinets, i. e. VAS between 500-800L, f-res. below 25 Hz and Qms above 10)?

Thank you for any hints.

[Scott L]

Search "Magnat" speakers, made right there in Germany, or at least at one time they existed. They made the woofer driver for an early version of the Wilson WAMM.

[tiefbassuebertr]

Originally Posted by Scott L

Search "Magnat" speakers, made right there in Germany, or at least at one time they existed. They made the woofer driver for an early version of the Wilson WAMM.

Mean you the Aggressor 6000 about this image URL's ?
http://www.bilderzumanziehen.de/bilda/aggressor_h.jpg
http://www.bilderzumanziehen.de/bilda/aggressor_s.jpg
http://www.bilderzumanziehen.de/bilda/aggressor_v.jpg
This loudspeker I had to check a few years ago. And I realized, that he had high mechanical and non linear losses (low value for Qms) probably cause poor material properties from surround and spider.
Thus the sound of the OMEGA sub woofer about
http://www.ms-technik.de/sub.htm
in the low level aera is bad and only useful (but not really good) by middle audible levels.


BTW - by chance I read about the URL
http://www.naimaudio.com/news/article/3395
http://www.focal.com/en/home-audio-l...l-and-naim.php
follow:
United by their passion for perfect sound, leading high-end audio brands Focal and Naim, today announce they are merging to create a new European leader in the audio industry. Focal & Co will own and manage Focal and Naim as independent brands, retaining their unique philosophies and product ranges.
and here the German version:
http://www.i-fidelity.net/news/detai...aim-audio.html