Romy the Cat wrote:

I think a cool direction to go might be to use a naked fibers or soaked cloth, I never tried but I would if I were in driver making business, Rgs, Romy the caT

And a Beautiful one at that!!

James, I am not familiar with those drivers. You might inquire at the sites that specialize in audio archeology, like AudioHeritage.com and others. They most likely know who made for Yamaha that driver.  However, there are a few thighs that I would like to mention in context of the Azurahorn result you posted above.

The measurements above were made with a microphone positioned at mouth – from my point of view it is not admissible and it says about nothing. BTW, the +5dB blip at 10.5kHz is too brutal but most likely will not be there at 8-12 feet and the slightly off axis shooting. Also, and it is probably the most important – do not look for MF driver based upon it’s response. Look for the right sound “full range” (I use the TTH characteristic) and upon you found what you need then learn bout the driver response and deal with the response idiosyncrasies.

gordan wrote:

Roman,I don't think I've ever read your explanation why not 2482? We are all on a holy grail path to find a (somehow) available good compression driver that can go down to almost 200hz in domestic conditions and there are not many better candidates. Have you ever finished your examination and testing of 2482 or you were just discouraged by it phenolic diaphragm you don't like. If it's a diaphragm only, Radian aftermarket aluminium ones could improve a transient response, if you here any issues there with an original one.