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VERY VERY Early Ribbon microphone Similar to CA PB-17

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Recent Activity4 of 451951 Unidyne 55S Microphone Elvis TypeUnknown microphone
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    Posted 3 years ago

    DukesHiFi
    (1 item)

    This is a microphone that apparently precedes the RCA PB-17 ribbon microphone so far as I can tell. It uses 245 tubes in the amplifier. It has electromagnetic field for the ribbon as opposed to later permanent magnet designs. It is in a heavy bell housing that is one large piece rather than the bell/cylinder two piece housing of the PB-17.

    Does anyone know any more about this microphone?

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