Speaker Asylum General speaker questions for audio and home theater.

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RE: What am I?

Posted by tomservo (M) on July 16, 2016 at 07:13:41

In Reply to: RE: What am I? posted by Lee of Omaha on July 15, 2016 at 16:35:31:

Hi Lee
Well i wouldn't be surprised if it was from a jute box or large console radio. Seeburg was in Chicago as were a number of loudspeaker mfr's.

There was;
Oxford loudspeakers
Cynaudigraph loudspeakers
Jensen Loudspeakers
Heppner loudspeaker (northern suburbs)
And i am sure i have forgotten a few Chicago companies

Also parts mfr's like Alpha products, Nu way and others.

I have to say the twin field coil winding is not as common as 1 winding and based on the basket design, it looks like an American driver, perhaps an RCA or Magnevox.

Here are some sample pictures;

http://www.canuckaudiomart.com/details/648998808-magnavox_15_field_coil_woofer_1950s/images/442367/

https://www.google.com/search?q=large+field+coil+woofer&source=lnms&tbm=isch&sa=X&ved=0ahUKEwic66jkkfjNAhWIlx4KHWNhB1QQ_AUICSgC&biw=1607&bih=919#imgrc=L9PghkaO-hdyzM%3A

http://edsgoodstuff.com/edscart/bmz_cache/5/538b18bf4e29a1a6c6811c39f9f2dbb4.image.600x450.jpg

http://thumbs.ebaystatic.com/images/g/p8AAAOSwmtJXbAX4/s-l225.jpg

I couldn't see the back cover but Jensen used a cap over many of it's drivers even after going to permanent magnets.


Hope that helps
Tom Danley
Danley Sound Labs

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