OT: Organ Tuning

Carl Teplitski koko99@shaw.ca
Wed, 24 Jul 2002 21:19:14 -0500


Complicated procedure on some organs, simple on others. Almost all
modern Transistor
organs don't require tuning, unless someone has messed with it and
changed pitch accidently,
or inadvertently. Most newer organs have one tuning slug on the
generator pc board, which will
align all 12 notes in the temperament, thus assuring that all octaves
will be in tune, all the way down into the bass pedals. A 440, 1 octave
lower is 220, etc.( not quite !!) E.T. has been done
at the manufactures level, and doesn't need to be done manually by tech.

Other organs require an adjustment of 12 generators individually. (
strobe, also )
The older units are more complex, and require a fair amount of work. If
an organ goes out of tune all over, I would think that a power supply
problem has occurred, and that must be addressed. Some organ co.s
provided service notes for sequence necessary to effect a proper tuning.
Generally, a strobe type tuning device is best suited for tuning organs
where only 12
adjustments are required, or some other means to assure that tuning is
at A 440, or some other
pitch to match an existing piano or other instrument.
Pipe organs are a whole different matter and require the attention of a
skilled tech.

Carl








Tim Hoover wrote:

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