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Viscount Physis Organs Reference Manual
Double cusp
there are two separate cusps, both resembling to the single cusp described
above. The lowest keys sound in an intermediate position, between the
centre and the outside, alternating (one on the right cusp, one on the left
cusp). As the pitch rises, rises the pipes are gradually distributed further
and further to the outside, alternating (e.g. C right, C# left).
Double wing
The tallest pipes are placed in the centre. As the pitch lowers, the pipes
are gradually distributed further and further to the outside, alternating.
14.3 THE WINDCHEST IN PIPE ORGANS
The wind chest is a crate where the air from a bellows (manual or electric) is spread equally among the pipes.
Usually, each manual has its own wind chest. However, there are different kinds of wind chests: some contain
only one stop, while other have an additional crate filled with air from the bellows that spreads air to all the
stops for each note.
Here you will find a short description of each kind of wind chest simulated by the organ.
Single cusp
The tallest, broadest pipes are located in the centre. As the pitch rises the
pipes are gradually distributed further and further to the outside,
alternating (e.g. C to the right, C# left).
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