• Country
• Japan

• Manufacturer / Brand
• Yamaha Co.; Hamamatsu

• Year
• 1980

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 158067

• • alternative name: Nippon Gakki

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Superheterodyne (common)

• Wave bands
• FM Broadcast Band Only

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 80 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Natural Sound Stereo Receiver CR-640 - Yamaha Co.; Hamamatsu

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 490 x 150 x 385 mm / 19.3 x 5.9 x 15.2 inch

• Notes
• Natural Sound Stereo Receiver with 40 watts RMS per channel into 8 ohms.

• Net weight (2.2 lb = 1 kg)
• 11.9 kg / 26 lb 3.4 oz (26.211 lb)

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Franz Scharner. See "Data change" for further contributors.

• Other Models

• Here you find 767 models, 734 with images and 380 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Yamaha Co.; Hamamatsu