• Country
• Czechoslovakia

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

• Year
• 1958 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 358474

• • Brand: Supraphon

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 13 cm = 5.1 inch

• Power out
• 0.75 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Loudspeaker ARO 331 - Tesla; Praha, Bratislava etc.

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 130 x 130 x 60 mm / 5.1 x 5.1 x 2.4 inch

• Notes

• 120 - 10000 Hz, 4 Ohm.

• Net weight (2.2 lb = 1 kg)
• 0.370 kg / 0 lb 13 oz (0.815 lb)

• Author
• Model page created by Gabriel Toth. See "Data change" for further contributors.

• Other Models

• Here you find 1874 models, 1197 with images and 680 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.