Topic summary
Electronic organ
Extracted from the Wikipedia article Electric organ.
Electronic organs (1930s–)
On the other hand, the Hammond Novachord (1939) and other competitors selected the subtractive synthesis design using various combinations of oscillators, filters, and possibly frequency dividers, to reduce the huge number of oscillators, which was the bottleneck of the additive synthesis design. The heat generated by early models with vacuum tube tone generators and amplifiers led to the somewhat derogatory nickname "toaster". Today's solid-state instruments do not suffer from the problem, nor do they require the several minutes that vacuum tube organs need to bring the filament heaters up to temperature.