Document Type and Number:
Japanese Patent JPS4953003
Kind Code:
A
Abstract:
An electromagnetic sound pickup for use in the production of quadrophonic sound recordings and the like includes at least two scanning devices each suited for different frequency ranges. Each scanning device is arranged on a common mounting means which is rotatably supported about its longitudinal axis in a sound pickup housing in such a manner that the pole piece ends associated with each scanning device can selectively be brought into contact with pole piece parts which are fixed with respect to the housing by rotating the mounting means about its longitudinal axis.
Application Number:
JP7037273A
Publication Date:
May 23, 1974
Filing Date:
June 21, 1973
Export Citation:
International Classes:
G11B3/04; H04R11/08; H04R11/12; (IPC1-7): H04R9/14