Telharmonium
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The Telharmonium was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. The electrical signal from the Telharmonium was transmitted over wires; it was heard on the r
Telharmonium console by Thaddeus Cahill, 1897
The workshop console of the telharmonium during its development at the New England Electric Music Company's Cabot Street Music Plant, in Holyoke, 1906.
Hammond organ
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The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert, first manufactured in 1935. Multiple models have been produced, most of which use sliding drawbars to vary sounds
Telharmonium
…The electrical signal from the Telharmonium was transmitted over wires; it was heard on the receiving end by means of "horn" speakers. Like the later Hammond organ, the Telharmonium used tonewheels to generate musical sounds as electrical signals by additive synthesis. It is considered to be the first electromechanical…
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