Editing Hammond organ (section)

===Drawbars===
[[File:Hammond-drawbars-plain.svg|thumb|The sound on a Hammond is varied using drawbars, similar to faders on an [[Mixing console|audio mixing console]]]]
The sound on a tonewheel Hammond organ is varied through the manipulation of drawbars. A drawbar is a metal slider that controls the volume of a particular sound component, in a similar way to a fader on an [[Mixing console|audio mixing console]]. As a drawbar is incrementally pulled out, it increases the volume of its sound. When pushed all the way in, the volume is decreased to zero.{{sfn|Campbell|Greated|Myers|2004|p=447}}

The labeling of the drawbar derives from the [[Organ stop|stop]] system in pipe organs, in which the physical length of the pipe corresponds to the pitch produced. Most Hammonds contain nine drawbars per manual. The drawbar marked "8′" generates the [[fundamental frequency|fundamental]] of the note being played, the drawbar marked "16′" is an octave below, and the drawbars marked "4′", "2′" and "1′" are one, two and three octaves above, respectively. The other drawbars generate various other [[harmonics]] and  [[subharmonics]] of the note.{{sfn|Lenhoff|Robertson|2019|pp=85–86}} While each individual drawbar generates a relatively pure sound similar to a flute or electronic oscillator, more complex sounds can be created by mixing the drawbars in varying amounts.{{sfn|Browne|Browne|2001|p=361}} Because of this, the Hammond organ can be considered a type of [[additive synthesis]].{{sfn|Lenhoff|Robertson|2019|p=85}}

Hammond manufactured from 1969 onwards have the footage of each drawbar engraved on its end.{{sfn|Lenhoff|Robertson|2019|p=85}} Some drawbar settings have become well-known and associated with certain musicians. A very popular setting is 888000000 (i.e., with the drawbars labeled "16′", "{{frac|5|1|3}}′" and "8′" fully pulled out), and has been identified as the "classic" Jimmy Smith sound.<ref name="spark"/>