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”.