Rodgers A648, Owner'S Manual

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37
Pipe Modeling
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Settings that emulate pipe organ characteristics and temperaments.
Menu item Value Explanation
Historical styles of music such as baroque can be played in the tunings that were used during that time.
Temperament selections cannot be saved into a General or Divisional piston. At the conclusion of a
performance, pressing 0 (Cancel) will not return the temperament to default. To save any temperament
settings as power-on default, hold SET and press 0 (Cancel) momentarily, then release both. A “User Settings
Saved” message will appear in the display.
Equal
The modern standard which divides the octave into 12 equal intervals, allowing
performance in all keys successfully. Unlimited modulation from key to key is
possible.
Mean-Tone
Each of the intervals of a fifth is slightly contracted to generate a major third.
Major thirds and in-tune fifths are slightly narrow, and the differences between
the major and minor seconds are smoothed out.
Pythagorean
A system of tuning attributed to the philosopher Pythagoras, in which the fourth
and fifth intervals are pure. Chords including the third will not sound smooth.
Kirnberger
Johann Philipp Kirnberger was a composer and a pupil of Bach. His temperament
favored pure fifths but performance was improved in many keys.
Werckmeister I Andreas Werckmeister further refined the Mean-Tone temperament.
Werckmeister III
Four tones are practically tuned identically to Equal temperament (C, D#, F# and
A).
Young I
Temperament
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Young II
Young temperaments offer further refinements to the Mean-Tone model, except
with slightly higher pitched sharps.
A part of Dimensional Sound Modeling, Rodgers’ exclusive Digital Dynamic Wind™ emulates the behavior of
pipe organ wind regulating devices and the response of pipes to an unsteady wind supply. Each stop is
programmed to respond to wind variations, just as in a pipe organ.
Flexible
Weak*
Normal
Strong*
Wind Supply
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Fixed
Varying degrees of “wind sag” or unsteadiness of the initial pitch.
* Allegiant models have all 5 values.
The minimum volume of each division when its Expression Shoe is closed can be adjusted to suit specific needs
or personal tastes. As the thickness of pipe organ shutters increase, the volume of the division decreases
when the shutters (Expression Shoe) are closed.
Shutters
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PD, GT, SW, CH, SO,
Loud reeds
(Chamades, Tuba,
Festival Trumpet,
etc)
pp, ppp, pppp, Unenclosed
Although the tremulants are carefully factory-set and adjusted when the organ is voiced, each may be
modified for rate and depth by the organist to meet a particular musical need or to suit an individual taste.
Tremulants
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Depending on model:
GT Main, GT Main II, GT Spare, GT Flute, GT Flute II
SW Main, SW Main II, SW Vox, SW Tibia, SW Flute, SW Flute II
CH Main, CH Main II, CH Tibia, CH Flute, CH Flute II
SO Main, SO Main II, SO Tibia, SO Eng Horn, SO Flute, SO Flute II,
GT ZIMB
Trem Rate: 0 255
Trem Depth: 0 255