RCA

44-B

Microphone

Main Details
Maker RCA Brand RCA Victor Company Harry F. Olson Designer Type 44 Microphone Series
Function
Additional Model ID MI-4027-A
Form Factor ½" Standard Mount
Signal Path Analog Hardware
Date Produced 1938-1939
Dimensions 12"x4.5"x3.5" (HxWxD)
Frequency Response 30Hz-15kHz
Additional Specifications
Element Ribbon Transformer Coupled
Pattern Figure-8
Output Impedance 50Ω, 250Ω Selectable
Sensitivity (10 dynes/cm², 250Ω Load) 800mV
Sensitivity (10 dynes/cm², Zero Level: 12.5mW, 250Ω Load) -67dB Zero Level: 12.5mW
Sensitivity (10 dynes/cm², Zero Level: 6mW, 250Ω Load) -64dB
Sensitivity (1 dynes/cm², Zero Level: 12.5mW, Open Circuit) -81dB
Finish Chromium Trimmed
Connections
Output Other Cable Mount
Controls
Voice/Music (Terminal Block)

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