slightly unsteady wind supply. Some independent ranks have their own “software reservoir,”
and each voice is programmed to respond to wind variations in the same way its equivalent
pipe rank or ranks would respond.
WIND STABILIZER
In order to adjust the behavior of the organ wind system, a “WIND STABILIZER” menu
is provided in the Console Display. This stabilizer operates in much the same way as does the
stabilizer control provided on some pipe instruments. In the “OFF” position, the wind has a
noticeable unsteadiness in the playing of rapid passages or large chords. The “1/2” position
reduces this unsteadiness somewhat, and the “ON” position makes the wind steady under all
conditions. The position is saved when the organ is turned off.
ADJUSTING THE WIND STABILIZER:
1. Press and hold the SET piston.
2. Turn the Select Knob counter clockwise (left) to “WIND STABILIZER”.
3. Release SET.
4. Rotate the Alpha Dial to select “OFF”, “1/2”, or “ON”.
RANDOM DETUNING
One of the essential ingredients of a pipe organ ensemble arises from the small amount of
pitch error in each pipe. No matter how carefully an instrument is tuned, small changes in
temperature or humidity cause the pipes to drift from their original pitches. Reed pipes are
especially prone to drift over time due to “creeping” of the tuning wire with cyclic
temperature variations.
The Random Detuning feature causes selected notes to receive a small amount of
detuning. The amount of detuning is chosen at random for each note of each voice. Some
notes will not be detuned at all. The number of notes detuned and the maximum amount of
detuning are selected for each voice to mimic the behavior of an equivalent pipe set. For
instance, reeds will exhibit more pitch error than flues. Because the detuning is random, there
is no degradation of the overall temperament of the instrument and the amount of detuning is
no more than one would experience in a recently-tuned pipe instrument.
This detuning process happens each time the organ is turned on. Once computed, the
pitch of each note remains constant. Thus, the tuning will be a little different, as it would be
with a pipe organ, each time the organ is used. The amount of Random Detuning present in
the organ will be set by a Rodgers representative during final voicing.
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