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The half-moon switch on a Hammond organ that changes setting on the Leslie speaker between "chorale" and "tremolo" Control of a Leslie speaker is normally catered for by an external two way switch, between two settings marked "chorale" and "tremolo". The switch is mounted onto the controlling instrument, so the player can easily switch settings.
Donald James Leslie (April 13, 1911 – September 2, 2004) was an American inventor best known for the Leslie speaker and its distinctive effect commonly used with the Hammond organ which helped popularize electronic instruments.
However, unlike a typical Leslie, it includes a treble and bass control, and a line level input. Also, in the Leslie units the horn and bass rotor moved in opposite directions, with a fast and slow motor on each. In the Sharma units, they both rotate in the same direction, with just a fast and slow motor shared.
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. The organ is commonly used with the Leslie speaker. Around two million Hammond organs have been manufactured.
Lowrey's first commercially successful full-sized electronic organ, the Model S Spinet or Berkshire, came to market in 1955, the year of his death. [1] Lowrey had earlier developed an attachment for a piano, adding electronic organ stops on 60 notes while keeping the piano functionality, called the Organo , first marketed in 1949 [ 3 ] as a ...
Thomas 2001 Organ (c.1976) The Thomas Organ Company is an American manufacturer of electronic keyboards and a one-time holder of the manufacturing rights to the Moog synthesizer. The company was a force behind early electronic organs for the home. It went out of business in 1979 but reopened in 1996.
Model Name / Number Years sold new Description Berkshire Deluxe TBO-1 1968 Organ with 2 44 key manuals, 13 bass pedals, built-in spring reverb, Leslie effect, and marimba effect famously known from Baba O'Riley by The Who played by Pete Townshend. [2] The TBO-1 is a slightly upgraded version of the older but otherwise identical Berkshire TBO ...
A Hammond C-3 organ The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert. The instrument was first manufactured in 1935. It has two manuals along with a set of bass pedals. A variety of models have been produced. The most popular is the B-3, produced between 1954 and 1974. The instrument was designed to replace the pipe organ in churches, and early adopters ...