• Country
• Soviet Union

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Soviet Union

• Year
• 1962

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 186141

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm

• Power out
• 2 W (unknown quality)

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Speaker box GR-3 {ГР-3} - Unknown - CUSTOM BUILT: Soviet

• Dimensions (WHD)
• 190 x 190 x 100 mm / 7.5 x 7.5 x 3.9 inch

• Notes
• Passive wall-mount speaker having been used aboard a Soviet Naval Ship. Intended for connection to a constant-voltage audio source (possibly 50 V). Connection to the ship's audio system is made by a five pole female Amphenol military type connector on the speaker enclosure.
  By pin selection in the male cable connector the audio power can be set to 2, 1, 0.5 or 0.25 W

• Net weight (2.2 lb = 1 kg)
• 1.750 kg / 3 lb 13.7 oz (3.855 lb)

• Author
• Model page created by Christer Falkenström. See "Data change" for further contributors.

• Other Models

• Here you find 172 models, 158 with images and 37 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: Soviet Union