The history of the Eurorack format
Doepfer Musikelektronik GmbH is a manufacturer of audio hardware, mostly synthesizer modules (modular synthesizer), based in Gräfelfing, Germany and founded by Dieter Döpfer. Dieter Döpfer was studying phsics and the mechanical standard was how the dimensions were developed. 19" rack mount was the format – took a catalog from a case manufacturer for scientific equipment...