...Balanced Singing Tone...
When constructing any grand or vertical piano the builder must provide a
foundation for t
he
soundboard. The back of a vertical piano represents the soundboard’s
foundation.
Rawlins & Co. vertical pianos rely on five full sized posts to provide a
stable foundation. A maple liner receives the soundboard and ribs.
Tuning and tonal
stability remain the primary function of the foundation. Viol-crown, an
exclusive feature for Rawlins & Co. vertical pianos, help give the
soundboard the stability, shape and function of a grand piano.
Grand pianos
start with an inner rim and an outer rim. The inner rim represents the
foundation while the outer (case) rim provides the beauty of the
instrument. Rims use a c
ombination
of mahogany and poplar. These woods, from deciduous trees, work together
to provide maximum
stability and long life.
Next the inner
rim receives the harp. Fastened to the inner rim with nine hex screws, the
harp will utilize one or two scale stabilization (nose) bolts.
Additionally twenty-three large screws secure the pinblock (wrest plank)
to the harp (plate).

Once the harp has
been secured to the inner rim and pinblock the piano can be readied for
stringing. With extremely high-speed drills the holes can be drilled in
the pinblock for the tuning pins. Care must be taken that drill bits
remain sharpened. A dull drill bit at this stage of manufacture could
result in a scored hole, which would not successfully secure the tuning
pin.
Now the treble
strings can be put into place. String wrappings around the tuning pin
(called a becket) must be uniform and cosmetically correct. After the bass
and tenor section has been strung the piano will be chip tuned. The tuner
plucks each string (like a harp) and pulls the piano to pitch.
When each
string has achieved its correct pitch about twenty thousand pounds of
tension will be placed on
the
harp and foundation. Correct down pressure on the bridge of each of the
two-hundred, twenty-three strings should be about six pounds per string.
This totals one-thousand, three-hundred and thirty-eight pounds of down
pressure.
If the builder
has too little down pressure (called bearing) the tone will be tubby and
listless. Too much down pressure results in a tone that will be shrill and
nasally.
This
Rawlins & Co. piano now has tension. Craftsmen take the measurements to be
certain that the musical part of the piano will be perfect. When this
finding has been satisfied the outer, case rim may be glued to the inner
rim.
The soundboard
affixed to the inner rim does not touch the outer, case rim. This lets the
soundboard freely amplify string vibrations and results in a superior
tone. You will find that a floating soundboard feature will not be
exclusive to Rawlins & Co. pianos. This feature would normally be found
only as part of the best-built instruments. Rawlins & Co. pianos enjoy
good company.
Each of the
steps outlined above take time. Time spent by skilled workers who take
pride in their craft create a better performing longer lasting musical
instrument.
♫...better
performing--longer lasting
