633
Common name: Altec 633
Production Status: Discontinued / Vintage
The 633 is an omnidirectional dynamic microphone for broadcasting, public address and music recording applications. Available in “A” (30/50 Ohm) or “C” (30/50 or 150/250 Ohm selectable) variants. The microphone features a Mylar® diaphragm, with tangential compliance, a copper voice coil and a highly efficient magnetic structure. The baffel structure on top of the microphone gives the omnidirectional microphone more directivity for applications such as public addressing. The 633 is also known as the “Salt Shaker”.
Electrical Characteristics
Frequency Response
35Hz - 12 kHz
Output Sensitivity
17.78 mV/Pa
Max SPL
Max SPL, THD:
Self Noise (CCIR)
dB
Self Noise (DIN/IEC)
dB-A
Output Impedance
50/250Ω
Recommended Load
Powering
Supply Current
mA
Alternative Powering
Switchable Options
Pad
Filter/EQ
Physical Characteristics
Connector
Proprietary
Connector notes
Available Colours
Instrument grey.
Weight
368.5 g
Length
95.2 mm
Min diameter width
Max diameter
50.8 mm
Depth
Accessories
Included
Optional