Identify this woofers

[napovo]

Dear everyone,
If you know what name and model are these woofers, please let me know. They are 11in die cast single piece, look alnico vintage at the same age of Acoustic research, Jensen.
Thank you very much.

 

[Lavane]

Are those cast baskets, or stamped? I wonder whats under the caps, alinco, or ceramic magnets?

 

[napovo]

Hi, the baskets are casted with the frame. I think they are alnico.

 

[nolasally]

I have those same woofers. I seem to recall mine coming out of some Janzen electrostatic speakers.

 

[napovo]

Oh great, I have searched a week no info. Do you recall what model number please. Thanks

 

[napovo]

I did a google and they seem from the Janszen Z series, either 500 or 600. Thank you for your help.

 

[Junk Audio]

I have a pair like that, I think they’re Japanese