RCA 74-B

From the RCA 74B data sheet

Uses

The 74-B has been widely used by broadcasters for years. It offers the smooth bi-directional response of the 44-BX in an inexpensive, small and light-weight model. The 74-B is particularly recommended for applications where the extended frequency response and more elaborate shielding and shock mounting of the 44-BX are unnecessary. It is, therefore, a very useful microphone for audition studios, announcements, talk back and for small and occasionally used studios. It may also be used for remote pickups where the frequency response is limited by lines and other factors.

Description

In design, the type 74-B is similar to the larger 44-BX Microphone, but lacks the latter's shock mounting and transformer shielding. The transformer output impedance taps are for 50, 250 and 15.000 ohms. The windscreen is finished in satin chromium and the base is umber grey or black. Attached to the base is a ball and socket joint which permits rotation or tilting at any desired angle.

Manufacturer Specifications:

• Output Impedance: 50, 250 or 15,000 ohms
• Directional Characteristics: Bi-directional
• Effective Output Level: -56 dbm
• Hum Pickup Level: - 100 dbm
• Frequency Response: 50-9,000 cycles

A page about the RCA 74B at the Coutant website.

The pictured RCA advertisement is from Service Magazine, June 1947