Found in a box. Any clue what it fits?
Attachment 85313
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Found in a box. Any clue what it fits?
Attachment 85313
Do you think it may be for a 375?
The subject matter in your pic looks to be the same as seen in the following pic;
http://usr.audioasylum.com/images/3/...phragm_008.jpg
Which is a W.E. 594 diaphragm .
:)
Google picture search says "port hole" :-)