630A
Common name: Western Electric 630A
Production Status: Discontinued / Vintage
The Western Electric 630 was a development of the WE618 omni moving coil microphone. It also appeared in the guise of the STC4021 (pictured), widely used by the BBC from the mid 1930s and for several decades after. The spherical shape and the circular (Romanov) baffle – source of the apple-and-biscuit nickname – were introduced to improve off-axis response to HF.
Electrical Characteristics
Frequency Response
40Hz - 10 kHz
Output Sensitivity
0.5 mV/Pa
Max SPL
Max SPL, THD:
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
dB-A
Output Impedance
20Ω
Recommended Load
Powering
Supply Current
mA
Alternative Powering
Switchable Options
Pad
Filter/EQ
Physical Characteristics
Connector
442A jack
Connector notes
Available Colours
Weight
Length
Min diameter width
Max diameter
65 mm
Depth
Accessories
Included
Optional