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Identify this compression driver?

DeriHadler

DeriHadler

New Member
Can anyone identify the origin of this compression driver. It is labelled as a Raycophone PMI-322 however Raycophone was an Australian cinema sound and radio company that ran from 1929 to the mid 1950's. They didn't manufacture drivers but rebadged imported units (often Altec Lansing). I have 4 of these that came from a military auction and were probably of Naval origins. I'm trying to identify the original manufacturer.
 

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Western Electric.

It's a kinda "hybrid" looking thing, body looks like a 713, front plate looks like a 555.

This is just a WAG based on your photos.
 
Until today, I never knew Raycophone existed. A web search turned up the history and they seemed to have been focused on theater PA systems in their early years.

This thread has a post by Mr. Morris that describes a similar driver. Maybe you could contact him for advice.

If I had to guess: Westrex driver.:scratch2:
 
Our warehouse contains many oddities of by-gone Australian audio industries. Raycophone is a classic example of a viable Australia technical manufacturing industry that was killed off by imports. Few people know that Aus had a thriving electronics industry including valves, transformers, speakers, passive componants and assembled units including radio transmitters. I have a 1965 Kriesler radiogram that contains no imported parts. These days we produce virtually nothing!!!
 
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