RCA / NBC "camera box" condenser microphone
Object Details
- Description
- RCA / NBC "camera box" condenser microphone on stand with cord and plug. Condenser microphone with three stages of amplification made possible by development of vacuum tubes free of operation noises. Transmits all sound frequencies registered at the microphone diaphragm. High cost of maintenance of three stages of amplification in the case made other microphone types more desirable. Black metal cube on short stand and base. Nameplate: RCA model AA4088, serial no. 3106. Cord and plug attached.
- Credit Line
- from National Broadcasting Company, Inc.
- Data Source
- National Museum of American History
- Date made
- ca 1928
- ID Number
- EM.311448
- catalog number
- 311448
- accession number
- 148157
- model number
- AA4088
- serial number
- 3106
- maker
- RCA Corporation
- Object Name
- Microphone
- condenser microphone
- Other Terms
- Microphone; Audio Devices
- Measurements
- overall: 14 1/2 in x 6 in x 6 in; 36.83 cm x 15.24 cm x 15.24 cm
- See more items in
- Work and Industry: Electricity
- Exhibition
- The Electric Dr. Franklin
- Exhibition Location
- National Museum of American History
- Record ID
- nmah_705736
