Stroh Violin 

 

The Stroh Violin was designed in 1899 by the Austrian John Matthias Augustus Stroh, and was manufactured in London by his son Charles in 1901. In the early part of this century, you could order them in stores in Vienna. The Stroh violin was used in the recording industry from the late 19th century to the start of electronic amplification due to the fact that standard violins were not powerful enough to record on the wax cylinders used in the early days of recording. Vibrations from the strings are passed to the center of an aluminum disc acting as a diaphragm which amplifies the sound, producing an effect similar to that of a conventional fiddle only louder and with a slight phonographic overtone. The Stroh Violin was also widely used in early phonographic recording and is still used in certain folk styles today. The brass cone is slightly darker in tone than the aluminum.
 

 
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