Tag Archives: Ennis¸ Joseph

Joseph Ennis

Joseph Ennis had a background in electronics and woodworking when he decided to restore a mandolin. He has now made several mandolins, beginning with a kit from Musicmakers. Joe also made a harp to prove a point about the notes of different musical scales: almost all of them are pitches that cannot occur on a piano.

▪ bio current as of 2002

Battery-Powered Instrument Amplifiers

2002
AL#69 p.22   BRB6 p.296            read this article
Joseph Ennis                                                                                           

▪ Build an amp that matches the resonance of your acoustic instrument. Build it into the instrument if you like. Ennis offers some math, some circuitry, and some advice to beginners who want the most portable amps for their instruments. With 9 photos and a circuit diagram.