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History of the manufacturer  

Ballantyne Company, The; Omaha (NE)

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Name: Ballantyne Company, The; Omaha (NE)    (USA)  
Royal Sound Master
Abbreviation: ballantyne
Products: Model types Others

The Ballantyne Company; Omaha, Nebraska (1950s).
Main business in cinema equipment, also known as manufacturer of AF amplifiers under the label "Royal Sound Master".

Founded: 1932
1946: Developed the in-car speaker and sound system for drive-in theatres.
2008 activ company see

This manufacturer was suggested by Wolfgang Scheida.

Some models:
Country Year Name 1st Tube Notes
USA  50 Sound Master Royal RX 224 6J5  Theater power amplifier. 
USA  50 Royal Sound Master RX-220 6J5  Ballantyne RX-220, Royal Sound Master; AF amp for drive-in theaters, Mic & Phono in.