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Audio Engineering

Periodical   Volume 35Number 1January 1951

us_audio_eng_jan_1951_titl.jpg
created by: Achim Dassow (26.Sep.20) available by: Achim Dassow
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Some example model pages for sets you can see there:

USA: Magnecord, Inc. Magnecorder PT6-JA (1949)
USA: Ampex; San Carlos, Portable Recorder 400 (1951)
USA: Heathkit Brand, Oscilloscope O-6 (1951?)
USA: McIntosh Audio Amplifier 50W-2 (1951??)

Some example tube pages for sets you can see there:

Triode, vacuum 845
Half-Wave Mercury-Vapor 866A
  
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