General Information

Serial #

C2614

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST METAL CASE, MICROPHONE ELEMENTS, FILTERS, TRANSFORMER, MOUNTING ASSEMBLY & CONNECTOR. A FINE CLOTHMESH PROTECTS THE WORKING PARTS FROM DUST & ACTS AS A WIND SCREEN.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

7.6 cm

Width

8.7 cm

Height

26.7 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Sound

Sub-Category

N/A

Manufacturer

AKA

SHURE

Country

United States of America

State/Province

Illinois

City

Chicago

Context

Country

North America

State/Province

Unknown

Period

1940-1970

Canada

USED IN CBC EDMONTON STUDIOS IN 1953. COST IN 1945: $27.64 U.S.

Function

USED TO PICK UP SOUND, VOICE OR MUSIC & CONVERT TO COMPLEX ALTERNATING CURRENT. THE ALTERNATING CURRENT WOULD BE AMPLIFIED TO MODULATE A TRANSMITTER OR DRIVE SPEAKER SYSTEM

Technical

A LOW IMPEDANCE (35 TO 50 OHMS) MICROPHONE WITH A RANGE OF 40 - 10,000 HZ. RECOMMENDED WHERE LONG LINES ARE NECESSARY, THE ORIGINAL MODEL 55A WAS A LOW IMPEDANCE MIKE. THE LATER MODEL WAS CALLED 55S, INDICATING 'SWITCHED'. IT COULD BE SWITCHED TO LOW, MEDIUM OR HIGH IMPEDANCE. THE SHURE 55 WAS ONE OF THE FIRST CARDIOID UNIDIRECTIONAL DESIGNS. SEE 'A HISTORY OF HIGH QUALITY STUDIO MICROPHONES,' JOURNAL OF THE AUDIO ENGINEERING SOCIETY (DEC. 1976), PP. 801-802.

Area Notes

Unknown

Details

Markings

MFR'S PLATE: 'MODEL/ 55A/ CARDIOID/ Unidyne/ UNI-/ DIRECTIONAL/ DYNAMIC MICROPHONE/ SERIAL/ C2614/ 35-50 OHMS/ [LOGO]/ MADE IN/ UNITED STATES OF AMERICA/ PATENTS PENDING/ SHURE BROTHERS CHICAGO, U.S.A.'/ DECAL ON TOP: 'SERIAL NO./ 89-4-123/ [?]ROPERTY [?]'/ AROUND CORD ATTACHMENT: 'CANNON ELEC DEV CO L A CAL'

Missing

N/A

Finish

'CHROMED' FINISH/ BLACK SCREEN OVER WORKING PARTS

Decoration

LOGO ON CENTRE FRONT/ OUTER CASE CONSISTS OF SERIES OF HORIZONTAL & VERTICAL CUT OUT BARS