The organ has three keyboards, called "manuals",
each with 61 notes, and a pedal keyboard of 32 notes.
The instrument has 33 stops and 38 ranks, which include
over 2500 pipes ranging in size from nearly a foot in
diameter and approximately eighteen feet long, to those
which are considerably smaller than an ordinary pencil.
An organ stop is a set of pipes of the same tone quality,
one pipe for each note on the keyboard. The stops are
played on four sections, or "divisions," each a small
complete organ unto itself. The stops of the Great division
play on the middle manual, the Swell division on the top
manual, the Positiv division on the lower manual,and
the Pedal dividion on the pedal keys.
Tonally, all the stops of the organ fall into four general
sound families, these being Principals, Flutes, Strings,
and reed. Within each tone family exist numerous
variations, and usually at two or three pitch levels.
The term "8 ft." indicates a stop which plays at
"fundamental pitch", the same pitch as the piano or the
human voice; "4 ft." indicates a stop playing an octave
higher, while a 16 ft. stop plays an octave lower than
normal piano pitch. Stops with roman numerals sound
more than one pitch, and play at higher pitches that
reinforce the fundamental pitch.
Trinity's organ has pipes made of both wood and metal.
The wooden pipes are constructed of select Philippine
mahogany, and are rectangular with nearly equal sides.
The smaller metal pipes are made of a tin/alloy, and
the larger ones of zinc. These metal pipes can be either
cylindrical or conical in shape. The many different sizes
and shapes of the pipes are what give the organ its
many distinctive sounds.
The members of Trinity who purchased this organ
fifty-one years ago made a wise stewardship decision.
It has blessed the worship here for these many years,
and is now renewed and enhanced to serve Trinity
for many more years to come.