Natural Sound Stereo Amplifier AX-640

Yamaha Co.; Hamamatsu

  • Year
  • 1990
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 156590
    • alternative name: Nippon Gakki

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 100 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 210 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Natural Sound Stereo Amplifier AX-640 - Yamaha Co.; Hamamatsu
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 435 x 139 x 331 mm / 17.1 x 5.5 x 13 inch
  • Notes
  • Stereo Amplifier, 2 x 105 watts RMS into 6 ohms (20 - 20.000Hz, 0,015%). For the japanese market (100 Volt mains).
  • Net weight (2.2 lb = 1 kg)
  • 9 kg / 19 lb 13.2 oz (19.824 lb)
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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