3B
Common name: Shure 3B
Production Status: Discontinued / Vintage
The 3B is a low cost two-button carbon microphone for general-purpose use in medium fidelity systems. It is designed for spring-suspension in microphone rings. It is ideal for mobile public address equipment, announcing and paging systems, amateur radiophone transmitters.
Electrical Characteristics
Frequency Response
30Hz - 5 kHz
Output Sensitivity
4 mV/Pa
Max SPL
Max SPL, THD:
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
dB-A
Output Impedance
200Ω
Recommended Load
0.2kΩ
Powering
Proprietary unit
Supply Current
7 mA
Alternative Powering
Switchable Options
Pad
Filter/EQ
Physical Characteristics
Connector
None (hard wiring required)
Connector notes
Available Colours
Nickel
Weight
226.79 g
Length
Min diameter width
Max diameter
93.66 mm
Depth
6.35mm
Accessories
Included
Optional