Drawbars & Percussion
1
DRAWBARS & PERCUSSION
Ë Manual Drawbars
Your Hammond Sk-series instrument has one set of nine Drawbars. Drawbars, often called Tonebars, are the heart and the
basis of the renowned Hammond Sound and have been used since the first Hammond Organ Model A introduced in 1935.
There are approximately 253,000,000 possible sound combinations that can be produced by these Drawbars. Each Drawbar
consists of sine waves of different pitches. The illustration below shows how each Drawbar relates to the keyboard when
middle "C" is pressed.
Each Drawbar is marked with a number followed by a footage mark. For example, the first white Drawbar is marked "8'".
This is pipe organ terminology indicating that the pipe used to produce the lowest note on the keyboard on a pipe organ is
actually eight feet long. The numbers from "1" to "8" on each Drawbar represent degrees of loudness - number 1 being the
softest, and number 8 being the loudest.
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