These pages comprise a dictionary of terms relating to the pipe organ. Please keep definitions to a few sentences, and do not include pictures or sound clips. When more space is needed for a term, a new page can be created for it.
Ears [noun] metal or wooden tabs protruding from the sides of the mouth of the flue pipe, parallel to the pipe body and perpendicular to the mouth. Sometimes used to support harmonic bridges.
Echo [adj.] A descriptive included in a stop name to indicate a softer tone and smaller pipes or lower wind pressure than usual for such a rank, which differences are intended to produce a sound as if from a distance. Example: "Echo Flute", "Echo Viol"
Echo Division [noun] - A division, often found in Romantic or Orchestral style organs, which contains soft or etherial-toned stops, and located at the far end of the room from the Main Organ. Synonym: Echo Organ. Contrast "Antiphonal Division".
Echo Organ [noun] - synonym for Echo Division.
Echowerk - German synonym for "Echo Organ" or "Echo Division".
Electrification [noun] - the process of converting a mechanical or tubular-pneumatic action to some form of electric or electro-pneumatic action.
Electro-Pneumatic Action [noun] a type of action in which an electromagnet opens a small valve which operates a pneumatic motor which in turn opens a pallet or pipe-valve. May be used with slider chests or unit chests.
En Chamade see chamade.
Enclosed Division [noun] - a division, often with its own keyboard, whose pipes are placed in a box or a chamber, and whose sound reaches the hearers through a set of Swell Shutters which are opened and closed by the organist for the control of volume.
Erben, Henry (1801-1883) Highly productive American organ builder in New York City. His father, Philadelphia-born Peter Erben, was organist of Trinity Church 1820-1839. Was apprenticed to John Hall at the age of 17, and became a partner and finally sole owner, later bringin his son into the business. Built notable instruments for Old St. Patricks' Cathedral NYC, Trinity Church NYC, and Christ Church Philadelphia.
Erzähler - A small-scale tapered-metal stop like a soft Gemshorn. Ernest Skinner claimed he invented the stop, and often built it as two-rank celeste named "Kleine Erzähler".
Estey -- American organ firm located in Brattleboro Vermont, and active from 1901 to 1960. Employed inovator William Haskell until his death in 1927.
Expression Pedal [noun] - see "Swell Pedal".
Extension [noun] - a stop in which most of the pipes are borrowed from another stop; typically at a higher or lower octave.Example: when the Gedeckt 4' uses the same pipes as the Gedeckt 8', adding a higher top octave. Organs where this principle is used extensively are called "extension organs."