Straus package

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The Straus package is a well-known double microphone combination of sound recording engineer Volker Straus.

construction

For the package, Volker Straus used two microphones from Georg Neumann with different directional characteristics close together, namely the KM 83 miniature microphone with omnidirectional characteristics and the KM 84 miniature microphone with cardioid characteristics . The two transformer-balanced microphone outputs were connected in series to a microphone input using a cable adapter , without separate control options on the mixer. Thus the cardioid and omnidirectional characteristics add up and result in a "wide cardioid".

At frequencies with a wavelength <2 cm (from 17 kHz) phase cancellation occurs due to the corresponding distance between the microphone capsules. The microphone developers have also pointed out that this circuit means that the electrical microphone data can no longer be properly guaranteed. At least it is not a parallel connection in which the source resistance of one microphone would be reduced by that of the other microphone. The two microphones of the Straus package could be recorded separately, thereby circumventing the series connection, which is problematic in terms of circuitry, but which would then no longer be a Straus package. This would make it possible to subsequently change the signal ratio of the omnidirectional to cardioid microphone and to set different directional characteristics between omnidirectional and cardioid.

Since then the microphone type "wide cardioid" u. a. When the Neumann KM 143 was on the market, Volker Straus no longer used a package, only the new wide cardioid type as a single microphone. The Straus package was created out of an emergency at a time when there were no microphone types with the special directional characteristic "wide cardioid" between omnidirectional and cardioid on the market. In addition, Volker Straus did not want to set up a main microphone system with his cardioid-ball combination, which was never used. Each package was used as a single microphone in the effective form of a "wide-cardioid" support microphone.

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