Microphone

Use this image

Can I reuse this image without permission? Yes

Object images on the Ingenium Collection’s portal have the following Creative Commons license:

ATTRIBUTE THIS IMAGE

Ingenium, 1984.0164.001
Permalink:

Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.

DOWNLOAD IMAGE

PURCHASE THIS IMAGE

This image is free for non-commercial use.

For commercial use, please consult our Reproduction Fees and contact us to purchase the image.

OBJECT TYPE: RIBBON/VELOCITY/TABLE
DATE: 1940
ARTIFACT NUMBER: 1984.0164.001

MANUFACTURER: Radio Corp. of America
MODEL: 44B
LOCATION: United States of America

More Information

General Information

Serial #: 1094
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: CASE, STEEL BOTTOM ASSEMBLY PLATE, NON-FERROUS CAST BOTTOM SECTION, TOP, PERFORATED NON FERROUS METAL, FABRIC WIND SCREEN BEHIND PERFORATED TOP SECTION. MICROPHONE ASSEMBLY HAS A MAGNET ASSEMBLY WITH CORROGATED RIBBON MOUNTED IN THE MAGNETIC FIELD. MATCHING TRANSFORMER IS MOUNTED IN THE BOTTOM SECTION OF THE CASE. MATERIALS CONT'D: FITTED WITH VIBRATION REDUCING COLLAR TO ABSORB VIBRATION & REDUCE NOISE.

Dimensions

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

Length: 20.1 cm
Width: 20.1 cm
Height: 37.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

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

Manufacturer

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

Context

Country: North America
State/Province: Unknown
Period: 1940-1960
Canada: USED IN CANADA
Function: TO PICK UP SOUND, VOICE AND MUSIC AND CONVERT TO COMPLEX ALTERNATING CURRENT. THE ALTERNATING CURRENT WOULD BE AMPLIFIED TO MODULATE A TRANSMITTER OR TO DRIVE A RECORDING DEVICE. RANGE 30 TO 15000HZ.
Technical: THE RIBBON MICROPHONE WAS A DEPARTURE FROM THE USUAL DIAPHRAGM DEVICE THAT MODIFIED THE VOICE RESPONSE BY THE FREQUENCY RESPONSE OF THESTRUCTURE, AS IT CONTRIBUTED VERY LITTLE MODIFICATION TO SOUND. WAS USED IN FILM AND BROADCASTING FOR MANY YEARS. PROVIDED A VERY TIGHT BI-DIRECTIONAL PICKUP PATTERN.
Area Notes: Unknown

Details

Markings: BOTTOM OF MIKE: 'M V'/ DECAL ON MIKE: 'CBC'/ DECALS ON BASE: 'SERIAL NO/ 15.4-527/ CBC/ R[?]ADA'/ STAMPED UNDER MIKE '1094'
Missing: ADJUSTMENT NUT/ BLACK PAINT ON MICROPHONE STAND BASE BADLY CHIPPED
Finish: BOTTOM SECTION, ANTIQUE BRONZE, TOP PERFORATED SECTION CHROME PLATED OR POLISHED ALUMINUM. A BRIGHT STRAP HOLDS THE TWO SECTIONS OF THE TOP TOGETHER. THE MICROPHONE STAND BASE IS GLOSSY BLACK ENAMEL. THE SOUND ABSORBING MOUNT AND YOKE ARE CHROME AND POLISHED ALUMINUM.
Decoration: N/A

CITE THIS OBJECT

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

Radio Corp. of America, Microphone, circa 1940, Artifact no. 1984.0164, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1984.0164.001/

FEEDBACK

Submit a question or comment about this artifact.