Revox A77 Stereophonic Magnetophone Type ORF Prototype Test Report
by STUDER REVOXPrototype evaluation and technical specifications for the Revox A77 Type ORF stereophonic tape recorder, dated May 1972. This test report documents mechanical performance characteristics including tape speed stability, flutter measurement, and speed consistency across operating conditions. Electrical performance data covers output signal levels, frequency response curves, and harmonic distortion analysis under various recording and playback scenarios. The report includes comprehensive recording chain characteristics, parasitic signal analysis to identify noise sources and interference, and detailed performance tables with measured results. Technical documentation features response curves across the audio spectrum and a simplified schematic diagram illustrating the transistorized circuit design, dual playback heads, and separate output amplifier configuration. Essential reference material for understanding the A77 Type ORF engineering specifications and performance verification methodology from the prototype testing phase.
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Document Details
- Format
- Pages
- 26
- Size
- 19.7 MB
- Category
- Audio & HiFi