Unidyne II Dynamic Microphone 55SW

Shure; Chicago, Evanston, Niles (IL)

  • Year
  • 1961–1963
  • Category
  • Microphone or Pick-up element
  • Radiomuseum.org ID
  • 275821

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Unidyne II Dynamic Microphone 55SW - Shure; Chicago, Evanston,
  • Dimensions (WHD)
  • 55 x 78 x 187 mm / 2.2 x 3.1 x 7.4 inch
  • Notes
  • The Model 55SW Microphone is of the multi-impedance type. Model 55SW may be connected directly to a 30-50 ohm line, a 150-250 ohm line or high impedance input. Selection of these impedances is accomplished by changing the position of the switch at the rear of the microphone. The switch positions are marked as "L" for low impedance (30-50 ohms), "M" for medium impedance (150-250 ohms) and "H" for high impedance (35.000 ohms).

    Model 55SW has built-in “ON-OFF” switch to control microphone circuit. The switch is an integral part of the receptacle assembly and is a slide-to-talk locking type switch.

    Same microphone without on-off switch: Shure 55S


    Charakteristik: Unidirektional.
    Frequenzgang: 50 Hz bis 15 kHz
    Mittels Umschalter können verschiedene Impedanzen gewählt werden:

    Low impedance: 30-50 Ohm
    Medium impedance:150-250 Ohm
    High impedance: 35 kOhm
    Ein Ein-Ausschalter gestattet es, den Ausgang kurzzuschliessen.

    Das berühmte Elvis Presley Mikrofon, genannt der "Rasierapparat".

  • Net weight (2.2 lb = 1 kg)
  • 0.740 kg / 1 lb 10.1 oz (1.63 lb)
  • Price in first year of sale
  • 85.00 USD
  • Author
  • Model page created by Felix Schaffhauser. See "Data change" for further contributors.

 Collections | Museums | Literature


The model Unidyne II Dynamic Microphone is part of the collections of the following members.


The model Unidyne II Dynamic Microphone can be seen in the following museums.