Microphone

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Ingenium, 1988.0398.001
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OBJECT TYPE: CONDENSER/STAND
DATE: 1964
ARTIFACT NUMBER: 1988.0398.001

MANUFACTURER: Bruel & Kjaer
MODEL: 4111
LOCATION: Copenhagen, Denmark

More Information

General Information

Serial #: 21528
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: MICROPHONE: BRASS & STEEL CASING; METAL & GLASS COMPONENT PARTS/ CASE: WOOD COVERED WITH PAPER & LINED WITH FELT/ METAL HARDWARE

Dimensions

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

Length: 58.5 cm
Width: 14.5 cm
Height: 5.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

AKA: Bruel Kjaer
Country: Denmark
State/Province: Unknown
City: Copenhagen

Context

Country: Canada
State/Province: Ontario
Period: 1960S-1980S
Canada: USED IN NATIONAL RESEARCH COUNCIL LABS.
Function: TO PICK UP SOUND AND CONVERT TO COMPLEX ALTERNATING CURRENT. THIS ALTERNATING CURRENT WOULD BE AMPLIFIED TO DRIVE PRECISE MEASUREMENT & ANALYSIS EQUIPMENT FOR RESEARCH.
Technical: EXAMPLE OF 1960S SOUND RESEARCH EQUIPMENT (VACUUM TUBE TECHNOLOGY)
Area Notes: Unknown

Details

Markings: PLATE ON MICROPHONE: 'BRUEL & KJOER/ Type 4111 Nr. 21528'/ PAINTED ON HEAD: 'PA-79'/ PLATE ON CASE: 'CONDENSER/MICROPHONE/ PA-79'/ STAMPED ON BOTTOM: 'Made in Denmark'
Missing: MOUNTING APPARATUS & POWER SUPPLY
Finish: CAST: BLACK SIMULATED LEATHER, PURPLE LINING/ MICROPHONE: POLISHED & BRUSHED CHROME PLATE WITH BLACK TRIM
Decoration: N/A

CITE THIS OBJECT

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

Bruel & Kjaer, Microphone, before 1964, Artifact no. 1988.0398, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1988.0398.001/

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