• Country
• Czechoslovakia

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

• Year
• 1950–1952

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 91180

• • Brand: Supraphon

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

• Number of Tubes
• 8

• Valves / Tubes
• EF22 EF22 EF22 EBL21 4654 4654 AX50 AZ4

• 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
• 50 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: KZ-50 513041 - Tesla; Praha, Bratislava etc.

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 435 x 230 x 275 mm / 17.1 x 9.1 x 10.8 inch

• Notes
• See the different versions of the KZ-50 and this text about the use of the Tesla tube AZ12N. Tischverstärker; Eingang für Tonabnehmer, Plattenspieler, Mikro, Radio; Ausgang 100 V/200 Ω, Übertragungsbereich: 50...10000 Hz.

• Net weight (2.2 lb = 1 kg)
• 21.5 kg / 47 lb 5.7 oz (47.357 lb)

• Source of data
• Ceskoslovenske Rozhlasove a Televizni Prijimace a Zesilovace

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

• Other Models

• Here you find 1835 models, 1152 with images and 661 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.