• Country
• Japan

• Manufacturer / Brand
• Sharp; Osaka

• Year
• 1970

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 123780

• • alternative name: Hayakawa Electric Co.Ltd.

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

• Number of Transistors
• 18

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 220; 240 Volt

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

• Power out
• 20 W (42 W max.)

• Material
• Metal case

• from Radiomuseum.org
• Model: STM-31 - Sharp; Osaka

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 340 x 105 x 250 mm / 13.4 x 4.1 x 9.8 inch

• Notes

• Sharp Stereo Vollverstärker STM-31

  Auftrennbar zwischen Vor-und Endstufe, 2 x Phonoeingang, Anschluß für 2 Lautsprecherpaare, Frequenzgang 30 - 80.000 Hz ± 1,5 dB, Ausgangsleistung:

  • 2 x 10 Watt Dauertonleistung an 8 Ω
  • 2 x 18 Watt Musikleistung an 8 Ω
  • 2 x 21 Watt Dynamic Output (Serviceanleitung)

  passender Tuner Sharp STT-31

• Net weight (2.2 lb = 1 kg)
• 5 kg / 11 lb 0.2 oz (11.013 lb)

• Price in first year of sale
• 510.00 DM

• Mentioned in
• Original Sharp Unterlagen

• Literature/Schematics (1)
• -- Original-techn. papers. (HiFi Jahrbuch 5 (1970))

• Author
• Model page created by Josef Pilz. See "Data change" for further contributors.

• Other Models

• Here you find 1338 models, 1209 with images and 517 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sharp; Osaka