• Country
• Japan

• Manufacturer / Brand
• Akai Electric Co., Ltd.; Tokyo

• Year
• 1962

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 268643

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 5

• Valves / Tubes
• 6AU6 6U8 6M-P20 6AR5 6X4

• Wave bands
• - without

• Details
• Tape Recorder

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical

• Power out
• 1.5 W (2 W max.)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Terecorder 903 - Akai Electric Co., Ltd.; Tokyo

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 340 x 381 x 203 mm / 13.4 x 15 x 8 inch

• Notes

• This  portable  AKAI recorder (working with AC power supply).

  • Monophonic Tape recorder 2 track Recorder/Reproducer.
  • Tape format: 1/4” width.
  • Track format: 2 Track 1 Channel.
  • Reel Size:7 inch (5 inch in the closed box).
  • Tape speed: 19 cm/s and 9.5 cm/s.
  • Heads: 2 Heads- 1 dual  track erase, 1 dual track record/reproducer.  
  • Motors: 1: synchronous motor 50/60 Hz.
  • Wow and flutter:  <0.15% RMS.
  • Jack connectors Input (mic and line)
  • Headphone:  High impedance to output jack connector.
  • Controls: Volume and tone control.
  • Metering:  VU-Meter.
  • Special Functions: Control monitor
  • Distortion:. <2% at 1 kHz.
  • Frequency response: 40 Hz – 12 kHz at 19 cm/s.
  • Loudspeaker: 1 x elliptical shape (15 cm x 10 cm).

• Net weight (2.2 lb = 1 kg)
• 13 kg / 28 lb 10.1 oz (28.634 lb)

Owner's Manual Akai Terecorder 903

159 KB

• Documents regarding this model

• Author
• Model page created by Christian Poezevara. See "Data change" for further contributors.

• Other Models

• Here you find 614 models, 568 with images and 202 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Akai Electric Co., Ltd.; Tokyo