Quiet Keys will easily install in all vertical pianos made, anywhere in
the world, after 1930.
"Over Damper" Upright Pianos
made in the UK before World War I will not except the Quiet Keys unit.
Shown looking
down through the piano's lid.
"An inferior, antiquated piano will have its dampers OVER the hammers,
obscuring them from view".
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"Capo d'astro" fitted Uprights
All vertical pianos are
fitted
with a pressure bar that is placed under the tunning pins and
runs
the length of the scale holding pressure downward against the
strings. The pressure bars vary in girth depending on design
and will present no installation problem for Quiet Keys with one
exception. An example, shown below, of one of the upright pianos made
in the United States
prior
to 1930 where the pressure bar, labeled as a "Capo d'astro" bar,
is so large that the hammers of
the extreme treble octave end up directly below it. The extreme
treble octave in these pianos does not leave room enough for Quiet
Keys' muting felt. Quiet
Keys can still be installed in these pianos but the felt needs to be
trimmed away for no muting on the most treble octave. |
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