Loudspeaker pressure drive units (two) (Serial Nos. 17933 & 29351) made by Western Electric

Made:
1927 in United States
maker:
Western Electric Company, Inc

Loudspeaker pressure drive units (two) (Serial Nos. 17933 & 29351) made by Western Electric, type 555W, designed by Wente, patented 1926 (Bell Telephone Laboratories), impedance 10 ohms at 400 Hz, used in sound-film units, 1927. (Patent Nos. 263411, 266395, 275567, 275571, 297938)

Details

Category:
Sound Reproduction
Object Number:
1990-538
type:
loudspeakers

Parts

Loudspeaker pressure drive unit (Serial No. 17933) made by Western Electric Company

Loudspeaker pressure drive unit (Serial No. 17933) made by Western Electric Company

Loudspeaker pressure drive unit (Serial No. 17933) made by Western Electric Company, type 555W, designed by Wente, patented 1926 (Bell Telephone Laboratories), impedance 10 ohms at 400 Hz, used in sound-film units, 1927. (Patent Nos. 263411, 266395, 275567, 275571, 297938)

Measurements:
overall (standing): 220 mm x 220 mm x 70 mm, 7.61 kg
Object Number:
1990-538/1
type:
loudspeakers
Image ©
The Board of Trustees of the Science Museum
Loudspeaker pressure drive unit (Serial No. 29351) made by Western Electric Company

Loudspeaker pressure drive unit (Serial No. 29351) made by Western Electric Company

Loudspeaker pressure drive unit (Serial No. 29351) made by Western Electric Company, type 555W, designed by Wente, patented 1926 (Bell Telephone Laboratories), impedance 10 ohms at 400 Hz, used in sound-film units, 1927. (Patent Nos. 263411, 266395, 275567, 275571, 297938)

Measurements:
overall (standing): 220 mm x 220 mm x 70 mm, 7.61 kg
Object Number:
1990-538/2
type:
loudspeakers
Image ©
The Board of Trustees of the Science Museum

Related Objects

Grundig Microphone
Steelman Transitape portable reel-to-reel tape recorder, 1963.

Steelman Transitape portable reel-to-reel tape recorder
Grundig "Cub" reel-to-reel tape recorder, c.1959.

Grundig "Cub" reel-to-reel tape recorder, c.1959.
Acoustic horn demonstration.

Acoustic horn demonstration.
Box-camera portable gramophone in wooden case, c.1920

Box-camera portable gramophone in wooden case
Vertical-Disc and Audio Cassette Stereo Music Centre Model VZ-3500, Serial No. 20912552, by Sharp Corporation, Japan, c. 1980, with twin 4 Ohm speakers Model CP-350HP

Sharp music centre, c 1980.