Drawbars for the upper and lower parts, Pedal drawbars, Black drawbars brown drawbars – Hammond SK Pro-73 73-Key Portable Keyboard/Organ User Manual
Page 39: White drawbars, Turn on and play
39
Turn On And Play
8th
1'
DRAWBARS FOR THE UPPER AND LOWER PARTS
Th
e fi rst white Drawbar represents the “fundamental” or “8´
base” tone. All of the other white Drawbars are octave intervals
or harmonics of the fundamental tone. Th
e tonal brilliance is
greatly increased by adding white Drawbars, but the harmonics
added are always in “consonance” or harmony.
BLACK DRAWBARS
BROWN DRAWBARS
PEDAL DRAWBARS
Th
e black Drawbars represent the “dissonant” harmonics which
are also necessary in building rich tone colors. Th
e mellowness
of a horn, the pungency of strings, and the brilliance of reed
voices owe much of their character to the presence of these
harmonics in diff erent degrees.
Th
e two brown Drawbars on the far left give depth and richness
to the sound. Th
e left 16´ is one octave lower than the 8´, and
5⅓
´ is the third harmonic of the 16´ fundamental. Normally,
the tones are built on the 8’ fundamental, but, if you want to add
depth to the tone or to expand the playing range by one octave
lower, build your tones on the 16´ fundamental.
Th
e 16´ and 8´ Drawbars control the sounds produced by the
Pedal part. Th
e fi rst brown Drawbar produces a composite tone
at 16´ pitch for a deep foundation bass, while the fi rst white
Drawbar produces a composite tone at 8´ pitch, or one octave
higher.
WHITE DRAWBARS
Th
e Colors of the Drawbars are traditional to Hammond, and were established to provide a quick visual guide to the harmonics
generated by the Drawbars.
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