• Year
  • 1949 ?
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 213106

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

Audio (to hear)

 Technical Specifications

  • Number of Tubes
  • 8
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Wire Recorder (or -Player)
  • Power type and voltage
  • Alternating Current supply (AC) / 200; 225; 250 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Wire Recorder EWR60 [Mk1] - Kolster Brandes Ltd. KB, K.B.,
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 540 x 285 x 430 mm / 21.3 x 11.2 x 16.9 inch
  • Notes
  • The machine's design is unusual, with a slatted cover recalling a breadbox or roller-shutter desk. The tone control is very simple. There are also controls for the motor, for forward, reverse and neutral, for selecting recording sources for radio, microphone or pickup. It was possible to make wire recordings from 78rpm records. The wire format, however, was unpopular and extremely fiddly. Tangles were common and it could not be easily spliced for editing. This wire recorder was made in the late 1940’s by Kolster-Brandes of Sidcup, Kent. In addition to recording and playing back magnetic recordings on wire, the machine has a high-quality Garrard record deck. However the small turntable is a design compromise.

    A modified circuit was released with the folowing valve line up; 6J7 6J5GT 6J7 6J5GT 6U5G 6V6GT 6X5GT

    An 8 minute video of the wire recorder being tested can be seen on YouTube

 Collections | Museums | Literature


The model Wire Recorder is part of the collections of the following members.