Owner`s manual

7
Reversibles
The Rodgers 790C is equipped with reversible pistons. These control certain couplers, stops and
functions. Press the piston to turn on, and press again to turn off. All reversible pistons light
when engaged.
Expression Shoes
The Rodgers 790C has two expression shoes. The left expression shoe controls the voices in the
Great and Pedal divisions, and the right expression shoe controls the voices in the Swell division.
See Figure 3.
Figure 3. Expression Shoes
Great/Pedal Unenclosed
In most classical pipe organs, the Great and Pedal divisions are unenclosed and are unaffected by
expression shoes. To accomplish this, you may select the Great/Pedal Unenclosed piston.
When the GT/PD UNENCL piston is lit, the Great and Pedal divisions remain at maximum
volume regardless of the position of the Great/Pedal expression shoe. The Swell is still
expressed with the right expression shoe.
When the CRESC and GT/PD UNENCL pistons are engaged simultaneously, the Swell is
expressed from the left expression shoe, and the right expression shoe becomes a Crescendo
shoe. The Great and Pedal divisions remain unexpressed and at maximum volume.
All Swells
For ease of expression control using only one shoe, press the CRESC piston. When it is lit, the
Great, Pedal and Swell divisions are expressed with the Great expression shoe.
Crescendo
The Swell expression shoe can become a crescendo shoe when the crescendo piston is engaged.
The crescendo piston (CRESC) is located to the left of the General Cancel piston.