35) The Aftertouch (continued)
The aftertouch is
purposely regulated late in section IV, “The Touch,” because so many other
steps affect it. In fact, I often do the backchecks and repetition springs
before regulating the aftertouch (sometimes this is a must if the springs were
weak), making the dip the last of the nine essential steps in grand regulation.
Regulating the dip after the backchecks may throw the backchecking distance
off, so some minor touch-up may be necessary here. The amount that the key goes
down in the front directly affects the amount that the key goes up at the back,
thereby changing the height at which the backchecks catch the hammer tails.
Make sure that the key
height and blow distances are very even, as just a little mistake in either
will show up in too much or not enough aftertouch. The action should have been
played upon and “settled in.” This is especially true, if the keyframe has been
refelted. If nothing else, give the piano a good tuning, making sure to “pound
the notes in.” After playing, recheck the key height, using both a straight-edge
as well as eyesight, even looking at the keys from different angles. Likewise
for the hammer line. All corrections should be made before starting to regulate
the aftertouch.
The action must be in
the piano, as it is impossible to work with such close tolerances with the
keyframe away from the keybed...
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