Looking for this compression driver

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bobkatz

Member
Joined 2014
digido.com
#1
A friend has the following compression driver in his 3 way system and one of them has gone bad. Does anyone know of a source for a used or NOS of this driver? Thanks.

https://audio-database.com/YAMAHA/unit/ja-6681.html

or

https://josephcrowe.com/blogs/news/yamaha-ja6681b-compression-driver

Finding a vintage compression driver today is like discovering a historic car in a farmer's barn.
Here I'm talking about the driver Yamaha JA6681B. This driver was also sold (after some tweaks to prep it for PA applications) by Meyer Sound. The driver got the name MS-1401A.
So MS used the driver in some PA speakers and also in studio monitors, e.g. 833, https://device.report/m/e1d3ec4c25873f9add652e1187081958d6d4211c3def248664dc783ffc0264e0.pdf
 
#4
I suggest he goes to an expert speaker repair shop, they can re-wind the original diaphragm. Well, as long as it's not severely mechanically damaged.

Forget to try to buy a new (used) driver, for the money you can buy a complete new PA top which is in the top 1/3 of SQ and spl. Likely for both sides.
 
#7
ICG said:
I suggest he goes to an expert speaker repair shop, they can re-wind the original diaphragm. Well, as long as it's not severely mechanically damaged
Click to expand...
Very often it is the Cu/Be surround that fractures, and diaphragms are NLA. Not fixable..
Else good advice as long as one can find a shop that has experience with them.


As for finding one, highest amount tends to appear on the Japanese auction sites, + shipping /import so not cheap.
 
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