Kenmore Violins Owner Dr. Jeff Loen has extensive training in violin making, restoration, and bow rehair and repair. After earning a Ph.D. in geoscience research, he trained his researcher’s focus on the problem of violin acoustics, eventually amassing one of the world’s largest databases of details of classic instruments. He is internationally known for editing the CAS Journal (2000-2004; an international peer-reviewed journal on violin acoustics), and for speaking at professional meetings including Oberlin Workshops, and conventions of the Violin Society of America, the American Federation of Violin and Bow Makers, and the International Symposium on Musical Acoustics.