Unidyne II Dynamic Microphone 55SW

Unidyne II Dynamic Microphone 55SW; Shure; Chicago, (ID = 1916970) Microphone/PU Unidyne II Dynamic Microphone 55SW; Shure; Chicago, (ID = 1916971) Microphone/PU
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Unidyne II Dynamic Microphone 55SW; Shure; Chicago, (ID = 1916970) Microphone/PU
Shure; Chicago,: Unidyne II Dynamic Microphone 55SW [Microphone/PU] ID = 1916970 933x447
Select picture or schematic to display from thumbnails on the right and click for download.
For model Unidyne II Dynamic Microphone 55SW, Shure; Chicago, Evanston, Niles (IL)
Country:  United States of America (USA)
Manufacturer / Brand:  Shure; Chicago, Evanston, Niles (IL)
Year: 1961–1963 Category: Microphone or Pick-up element
Wave bands - without
Power type and voltage No Power needed
Loudspeaker - For headphones or amp.
Power out
from Model: Unidyne II Dynamic Microphone 55SW - Shure; Chicago, Evanston,
Material Metal case
Dimensions (WHD) 55 x 78 x 187 mm / 2.2 x 3.1 x 7.4 inch

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
Mentioned in Funk-Technik (FT) (4/1963, S. 122 / Werbeanzeige)

Model page created by Felix Schaffhauser. See "Data change" for further contributors.

All listed radios etc. from Shure; Chicago, Evanston, Niles (IL)
Here you find 122 models, 116 with images and 44 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.