three stage experimental audio amplifier

Description (Brief):

Three stage experimental audio amplifier, unit housed in a wooden case with three copper-lined compartments that isolate each section. All controls and inputs are on the front panel. Separate input jack for each section with one output jack after the final section. Terminals for the tube voltages and a control for each of the tube filaments are also on the front panel. Unit now has only one tube installed - a Radiotron UX-112A in the first section. Top of case is hinged. No maker labels. Capacitors dated 1915. No extant makers marks..

Date Made: ca 1915

Location: Currently not on view

See more items in: Work and Industry: Electricity


Exhibition Location:

Data Source: National Museum of American History

Id Number: EM.336482Accession Number: 1977.0896Catalog Number: 336482

Object Name: audio amplifier

Measurements: overall: 7 3/4 in x 19 3/4 in x 12 in; 19.685 cm x 50.165 cm x 30.48 cm


Record Id: nmah_1343619

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