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Rodgers 538/i548
Quick tour
Tutti
There are times when a full organ registration is needed
immediately. Tutti allows you to engage full organ
quickly without canceling the current registration.
To activate Tutti, press the [TUTTI] piston (it lights).
Press it again to turn Tutti off and return to the current
registration. (You can also press [0] to switch off the
Tutti function.)
Transpose
The Transpose function allows you to change the key of
the music played. Commonly, this is used to
accommodate a soloist (or instrumentalist who prefers
to play an accompaniment in a different key than what
is written) or to easily raise or lower the pitch of a
hymn. The transposition interval is normally shown in
the display ("Transpose" value). If another screen
appears in the display (i.e., while programming a
specific parameter), you can easily return to the this
page by pressing and holding [ø¥EXIT].
While the master page is displayed, the transposition
interval can be changed using the Select knob (–6~+5
semitones).
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About stop families
Organ stops are grouped into four main families:
Principals, Flutes, Strings and Reeds. Each of these
families is well represented on your Rodgers
instrument.
The Principal family is the group of stops unique to the
organ, they aren't imitative of other instruments.
Principals are often referred to as the "backbone" of the
organ and play a strong role in hymn accompaniments
and as the foundation of many chorus registrations.
Examples of stops belonging to the Principal family are
Principal, Octave, Super Octave, Choralbass and
Prestant.
In addition, mixture stops, with names such as Mixture
and Plein Jeu, consist of multiple Principal ranks; the
Roman numeral following the name denotes the
number of ranks contained in the mixture. For example,
a Mixture IV tab contains four ranks of Principal pipes.
The Flute family consists of stops that are generally
imitative of orchestral flutes and recorders. This is an
extremely diverse group of stops which function in a
myriad of ways, from acting as a solo color to serving as
the basis of ensemble registrations, either by
themselves or in combination with other stops.
Examples of flute stops are Bourdon and Gedackt.
String stops do exactly what you would imagine—they
imitate the sound of orchestral strings. These ranks are
smaller in scale than most other ranks and usually have
a lot of upper harmonics and a "clean" or "silvery"
timbre. This characteristic makes them well suited to
accompaniment and softer ensembles. String stops
include Violone, Violin Diapason, and Viole Celeste II.
Members of the Reed family are also very diverse and
are used for everything from solo colors to the fiery
crown in a full organ registration. These stops, also, are
often imitative of orchestral reeds and brass
instruments. Examples of reed stops are Trumpet,
Trompette, and Trumpet.
Other families
In addition to the four families of stops listed above,
your 538/i548 also has a few other stop families that
can be used by selecting orchestral sounds.
There are also percussive instrument voices such as
Piano and Timpani. These stops have a percussive
attack and gradually grow softer as you hold the note.
Unlike many other systems, the decay of notes played
on the Chimes isn't affected by changes in the
registration.
Also present in the 538/i548 specification are voices in
the orchestral and choral families. Examples of
orchestral colors include the Slow Strings and Warm
Strings; choral voices are represented by Real Choir
and Choir Fem textures.
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