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- Multiple models have been produced, most of which use sliding drawbars to vary sounds. Until 1975, Hammond organs generated sound by creating an electric current from rotating a metal tonewheel near an electromagnetic pickup, and then strengthening the signal with an amplifier to drive a speaker cabinet.
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The Hammond organ's technology derives from the Telharmonium, an instrument created in 1897 by Thaddeus Cahill. The telharmonium used revolving electric alternators which generated tones that could be transmitted over wires.
- 1935–1975 (tonewheel models), 1967–1985 (transistor models), 1986–present (digital models)
- $1,193 (Model A, 1935), $2,745 (Model B-3, 1955)
- Full
- Tonewheel
The spinning treble horn and bass rotor gave the Hammond Organ a “tremulant”, as it’s called in the pipe organ world. Pitch-changing vibrato, volume-changing Tremolo, and a little “whoosh” of moving air all put together. It made the Hammond Organ sound completely different.
In this three part series of interviews with Cliff Unruh, we are going to talk about inventor Laurens Hammond and how the Hammond Organ Company came about, how the Hammond works from a simplified technical standpoint, and how the mechanical design shapes the sound characteristics that make the Hammond so iconic.
Nov 2, 2009 · Five facts and things. Who was the first musician to unleash the creativity of the Hammond? That would be jazz organist Jimmy Smith. Before Smith, the Hammond had a distinctly more conservative...
- David Mcnamee
The drawbars actually emulate the pipes on a church organ, which is the job the Hammond was originally designed to do. The classic jazz organ setting (as used by Hammond supremo Jimmy Smith) is obtained by pulling out the first three drawbars and flicking the percussion switches for soft volume, third harmonic and fast decay.
Died: July 1, 1973, Cornwall, Conn. (aged 78) Laurens Hammond (born Jan. 11, 1895, Evanston, Ill., U.S.—died July 1, 1973, Cornwall, Conn.) was an American businessman and inventor of the electronic keyboard instrument known as the Hammond organ. Hammond’s early education took place in Europe, where the family had moved in 1898.
