![]() ![]() ![]() Whilst dirty key contacts or busbars and also deteriorated grounding connections can enhance the key click, the key click is always present even with perfectly functioning and clean key contacts and busbars and perfect grounding connections so therefore Laurens Hammond and the subsequent Hammond designers tried to suppress the key click sound right from the start in 1935 until the end of Hammond tonewheel production in 1975. ![]() Many Hammond organ simulators include a key click control to reproduce this characteristic.įor a detailed analysis of key click and the interaction of the key contacts on busbars see: Additional info from Kon Zissis: Later rock and blues players found the key click characteristic to be desireable and some jazz organists consider it to be essential. In later console organs like the B3, the higher harmonics were pre-emphasized and the preamp designed with an upper frequency roll-off to help conceal the click. In the patent, key click was to be removed by a bypass. The sine waves from the constantly running generators would be connected at random points in their oscillation.Ĭonsiderable design efforts were made to reduce it but it could never be eliminated. As a key was depressed, the nine contacts under the key closed against their respective busbars at slightly different times and bounced as they closed. This was considered a defect and was caused by the audio signal being routed directly through the key contacts. There was an attack transient that sounded like a click or pop when a key was pressed. The sound produced by early Hammond Organs differed from pipe organs in one characteristic way. Key Click Excerpted from the Original Hammond Leslie Faq. ![]()
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