Loudspeaker Evaluation Kits with various Magnet Assembly units

[tiefbassuebertr]

I am looking arround for evaluation kits for speakers. This means, I want to have 3-4 various magnet assembly units to realize a wide range of bl products, so as some baskets with various cones and various suspensions/surrounds.
Which company are there on the marked, that offer this?

I know only three brands, that offer certainly details in this direction:

1) JBL-Selenium (both cone and spider of the recone kits of certainly models was screwed in the basket instead glued - only by vintage models)
2) McCauley Sound and Peavey: field-serviceable recone kits - this means screwed magnet assemblies - have a look to the attached pics
3) Audio Technology; this company made according to individual requirements speaker, which have each wanted character
Flex Units Loudspeaker Drivers

But I want to have real evaluation kits because otherwise I must order a too much amount of different prototypes.

I have found for a long time such a supplier from Japan, but I don't find currently the appropriate website.

Thank you very much for your advices.


BTW - in early years this company was the main supplier for the loudspeaker industries:
http://www.kurtmueller.com/