The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. 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. The organ is commonly used with the Leslie speaker.
A Hammond C-3 organ
The two manuals of the Hammond B-2
Unlike an American Guild of Organists pedalboard, a console Hammond normally has 25 pedals.
Preset keys on a Hammond organ are reverse-colored and sit to the left of the manuals
An electric organ, also known as electronic organ, is an electronic keyboard instrument which was derived from the harmonium, pipe organ and theatre organ. Originally designed to imitate their sound, or orchestral sounds, it has since developed into several types of instruments:Hammond-style organs used in pop, rock and jazz;
digital church organs, which imitate pipe organs and are used primarily in churches;
other types including combo organs, home organs, and software organs.
WERSI Scala, an open architecture software organ platform in 2002
Rodgers Trillium organ custom three-manual console on a church. right top: a sound module for extra pipe and orchestral sounds. left top: a laptop PC for sequencing the organ.
Telharmonium console by Thaddeus Cahill, 1897.
Tonewheels