The RCA Types KB-2A, B, and C “Bantam” velocity microphones
Hear the sound of the Type KB-2B voiced by Dennis Schrank.
Description The “Bantam” Velocity mics, Types KB-2A, KB-2B, and KB-2C are miniature Velocity Microphones whose principle of operation is no different from that of the 44-BX. The small size (without sacriﬁce in output level) is obtained through the use of highly efﬁcient magnetic materials which are placed in the most advantageous places. The ribbon and pole piece assembly is contained in the upper screened portion, and the transformer and compensating reactor in the housing immediately below. Output impedances of 30/150/250 ohms are provided. The screened portion is pivoted and may be tilted forward or backward through an angle of approximately 30 degrees. On one side below the pivot is a screwdriver-type switch for selecting the bass response for voice or music. The cable can be disconnected by opening the back portion of the shank and disengaging the concealed plug. An “XL” type male insert is supplied as a part of the microphone. For desk positions, the KS-5A low-height stand is recommended for use with the KB-2. Any standard ﬂoor stand or collapsible stand may be used for other applications.
Miniature size—ideal for concealment.
Cable disconnect at microphone makes handling easy.
Excellent response over the essential audio range.
Directional pattern allows orientation to reduce pickup of unwanted reﬂections.
Insensitive to stray magnetic ﬁelds.
Adjustable low frequency response.
Voice or music pickup.
An RCA Type KB-2A above, and a Type KB-2B below.
Uses The KB-2 series is used in AM and FM broadcast studios, remotes, and in television programs where it is essential that the artist’s face must be in full view. The mic is small enough to permit complete concealment if desired. In addition, the KB-2 will give excellent service in any of the applications suggested for the 44-BX Velocity Microphone with no sacriﬁce in output level and an imperceptible change in quality. Cognizance must, however, be taken of the fact that the windscreening in the KB-2 is not as effective as on the 44-BX. It is, therefore, best not to attempt to work as close to the KB-2 if excitation due to breath puffs are to be avoided.
Photographs courtesy of Dennis Schrank Text and illustration courtesy of RCA