Microphone

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Ingenium, 1985.0509.001
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OBJECT TYPE: DYNAMIC & RIBBON VELOCITY/UNIDIRECTIONAL
DATE: 1939
ARTIFACT NUMBER: 1985.0509.001

MANUFACTURER: Western Electric
MODEL: 639A
LOCATION: United States of America

More Information

General Information

Serial #: 743
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: CASE, CAST ALUMINUM OR WHITE METAL/ INTERNAL CONSTRUCTION, MAGNETS, CORRUGATED RIBBON ELEMENT, DIAPHRAGM AND VOICE COIL, EQUALIZERS, TRANSFORMERS, ETC./ CASE: SYNTHETIC WITH METAL ZIPPER

Dimensions

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

Length: 21.9 cm
Width: 11.2 cm
Height: 9.1 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Sound
Sub-Category: N/A

Manufacturer

AKA: Western Electric
Country: United States of America
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Unknown
Period: 1940-1965 (APPROX)
Canada: PLEASE SEE HISTORY OF CRAWLEY FILMS LTD. IN SUPP. INFO.
Function: USED TO PICK UP SOUND SUCH AS VOICE AND MUSIC AND CONVERT TO COMPLEX ALTERNATING CURRENT. THE CURRENT TO BE AMPLIFIED AND TRANSMITTED WITH THE TELEVISION VIDEO.
Technical: A UNIQUE STEP IN THE DEVELOPMENT OF DIRECTIONAL MICROPHONES. OTHER MANUFACTURERS QUICKLY DEVELOPED SIMILAR MICROPHONES.
Area Notes: Unknown

Details

Markings: 'Western Electric' IN RED ON PLATE ATTACHED TO BODY/ 'WESTERN ELECTRIC MADE IN U.S.A. 639A 743' IN CIRCLE AROUND ATTACHMENT/ 'CDA' IN RED ABOVE SCREW ON BODY/ 'USE 'C' OR 'D' POSITIONS ONLY' HANDWRITTEN IN BLUE INK ON ADHESIVE TAPE ATTACHED TO BODY/ 'WESTERN ELECTRIC/ MADE IN U.S.A.' ON CASE
Missing: PART OF VERTICAL GRILL ON FRONT OFCASE BROKEN OFF/ NICKLE PLATED TRIM STRIP CRACKED AT TOP RIGHT REAR
Finish: BLACK METAL BODY/ SILVER-COLOURED TRIM/ DEEP PURPLE COLOURED FABRIC/ TEXTURED BAND ON ATTACHMENT IS PAINTED YELLOW.
Decoration: TWO CHROME STRIPS WITH RED DETAIL CIRCLES THE TOP AND BOTTOM OF THE CASE/ A SMALLER STRIP CIRCLES THE MOUNTING TUBE

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Western Electric, Microphone, circa 1939, Artifact no. 1985.0509, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1985.0509.001/

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