• Country
• Czechoslovakia

• Manufacturer / Brand
• Tesla; Praha, Bratislava etc.

• Year
• 1947 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 136250

• • Brand: Supraphon

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

• Number of Tubes
• 4

• Valves / Tubes
• AF7 EL12 EL12 AZ11

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 120; 220 Volt

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

• Power out
• 15 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Bellton ZM15 515E - Tesla; Praha, Bratislava etc.

• Shape
• Chassis only or for «building in»

• Notes
• Endverstärker, Endstufe mit Lautstärke-, Höhen- und Tiefeneinstellung, Eingangsspannung 2,7 mV.

• Source of data
• -- Original-techn. papers.

• Author
• Model page created by Wolfgang Lill. See "Data change" for further contributors.

• Other Models

• Here you find 1832 models, 1138 with images and 643 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.