Armand Givelet , the engineer and physicist at the radio laboratory at the Eiffel Tower in Paris produced his first instrument the ‘Clavier à Lampes’ in 1927 as a way of solving audio technical problems at the radio station. Because microphones of the time were of poor quality, it was impossible to record or broadcast decent quality sound. Givelet’s response was to build an electronic organ that could be directly injected into the transmitter without using microphones. The resulting instrument, the ‘Clavier à Lampes’ was a monophonic vacuum tube keyboard instrument.
The ‘Clavier à Lampes’ was premiered in Paris in 1927 and taken on tour to the United States starting with the Trocadero Theatre in Philadelphia on June 9th 1927.
Images of the ‘Clavier à Lampes
Armand Givelet Biographical notes
Armand Givelet (born:21 07 1889 Reims France – died:09 11 1963 La Varenne St-Hilaire, St-Maur-des-Fossés) was originally an engineer in the French military during the First World War but soon recognised the potential of Lee De Forest’s triode technology. He founded the first Radio Club in France and the T.S.F. engineering school. Givelet became a recognised authority on radio technology and inventor who held many patents for radio and broadcast equipment as well as his work with electromechanical (tone-wheel) and valve based electronic musical instruments; His particular contribution w as a stabilised audio oscillator that used much less power than traditional triode circuitry.
Givelet’s first complete instrument was the The monophonic “Piano Radio-électrique” unveiled in 1927. A meeting with the organ Builder Eloi Coupleux in early 1929 began a life-long collaboration that produced some of the earliest electronic organs – designed primarily for church and religious music. The largest of the Coupleux-Givelet instruments was built for “Le Poste-Parisien” – withs 200 oscillator tubes producing 70 different timbres or stops. Despite their unique features, The Coupleux-Givelet organs were rapidly made obsolete by much smaller and cheaper organs such as the Hammond Organ. Only four organs were sold by Coupleux-frères to churches in France.
Givelet also wrote theatrical works under the pseudonym Ch. de Puymordant.
Olivier Carpentier ‘L’Aventure industrielle des frères Coupleux, 1900-1935′ Préface de Douglas Heffer, éditions de l’Inoui, 2004.
La Vie et les ondes : l’oeuvre de Georges Lakhovsky / Michel Adam et Armand Givelet, 
Le Genie Civil February 7, 1928
Le Monde, 1989-07-21, p. 23