ABSTRACT
A group of three women who recorded for Edison in 1919-1923; they were M.Felice Dann (cornetist), Blanche L.Dann (pianist), and Rosalynd Davis (violinist). They recorded for Edison in December 1919, as a trio and with solos for the cornet and violin. The Dann repertoire was composed of ballads of the day. The group was effective enough to be assigned to tone test tours from coast to coast, often with tenor Harvey Hindermyer. [Walsh 1977/7-9.]
An internationally recognized authority on loudspeaker system design and testing, Dr. D’Appolito earned a B.E.E. degree in 1958 (Rensselaer Polytechnic Institute), S.M.E.E. and E.E. degrees in 1964 (Massachusetts Institute of Technology), and a Ph.D. in electrical engineering in 1969 (University of Massachusetts). He worked in the defense industry for a number of years, but left that field in 1995, and now runs his own
consulting firm, Audio and Acoustics, Ltd. He has designed more than 60 loudspeaker systems for both private and commercial clients, including the ARIA 5 Point Source for Focal, France, that was selected loudspeaker of the year for 1991 by Hi-Fi Video Magazine (Paris). One of his more well-known achievements was the MTM (mid/tweeter/mid) vertical loudspeaker geometry, commonly known as the “D’Appolito Configuration.” Renowned for its ability to better control vertical system radiation, this driver arrangement has been copied widely by numerous manufacturers throughout the world, and many THX-certified speakers also make use of the concept. He is a contributing editor to Speaker Builder Magazine and has published more than 60 articles in both professional and popular hobby journals. His book, Testing Loudspeakers, has been published by Audio Amateur Press.
