ESC
44-B

44-B

BrandRCA
ManufacturerRCA Victor
SeriesType 44 Microphone
DesignerHarry F. Olson
FunctionMicrophone
Produced1938-1939
Model IDMI-4026-A
Form Factor½" Standard Mount
Signal PathAnalog Hardware
Dimensions11.4 × 30.5 × 8.9 cm (W × H × D)
Frequency Response30Hz-15kHz
ElementRibbon (Transformer Coupled)
PatternFigure-8
Output Impedance50Ω, 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
FinishBlack
Connections
  • Output · Other · Cable Mount
Controls
  • Voice/Music (Terminal Block)