633

Primary use:

Type:

Polar patterns:

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