PEDAL SOLO UNIT - MODELS RT, RT-2, RT-3, and D-100
A pedal solo unit is incorporated in the Concert Models with prefix RT and D to
provides a series of bright pedal solo tones in addition to the usual pedal
accompaniment tones available on other models. The pedal solo tones, generated by a
vacuum tube oscillator circuit, are controlled by a volume control knob and eight
tilting stop tablets located at the right end of the Great manual (Fig. 5). One
tablet turns all the pedal solo tones on or off and the others provide various pitch
registers and tone colors. The pedal solo unit is independent of the electromagnetic
tone generator and can be turned off without affecting the remainder of the organ.
NORMAL - SOFT VOLUME CONTROL
(Models B-2, B-3, C-2(G), C-3, RT-2, RT-3, A-100, D-100)
This control (upper left, Fig. 3) is a tilting tablet which supplements the action
of the expression pedal. In soft position it reduces the volume of the whole
instrument. It is particularly useful when playing in a small room or when
the organist wishes to practice without disturbing others.
CHORUS CONTROL
(Models BC, BCV, D, DV, E, G)
On these models an extra generator known as a chorus generator will be
found. To use the tones generated by this unit at will, one extra black
drawbar has been added which operates a switch located on the generator.
The drawbar labeled chorus is located at the right-hand end of the console.
(Fig. 6)
When the organ is played with the chorus drawbar pushed in (the off position)
it operates in exactly the same way as though no chorus were included. Pulling
the drawbar out (to the on position) instantaneously adds the ensemble or
chorus effect to whatever is being played. Actually it adds a series of slightly
sharp and slightly flat tones to the true tones produced by the main generator.
The resulting electrical wave contains a complex series of undulations which
enhance the pleasing effect of many tone qualities, notably string and full
organ combinations.
The chorus control should not be confused with the vibrato chorus effect,
described under vibrato.. The two effects are similar musically, but are
produced by completely different means.
EXPRESSION OR SWELL PEDAL
The swell pedal, located in the customary position, is operated by the right
foot and with it the volume of the organ may be controlled over a wide range.
It operates on the two manuals and pedals equally; that is to say, once the
manuals and pedals are balanced, they retain their relative balance over
the entire swell pedal range.
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