Damper Problems

Newton Hunt nhunt@rci.rutgers.edu
Tue, 14 May 1996 13:49:32 -0400


Alos, the felts could be contacting the string at one end but not the other or
unequally.  Lift the damper and bend the wire at the head so one end contacts
but the other does not.  If the harmonic shanges that is part of the prohblem.
Bend the wire in the opposite direction and see hou much ring you can remove.

Play the note with one string muted with your finger then play the note with
the other string muted with your finger.  If one string is muted but the other
is not then you can move the damper head in the direction of the unmoted string
or you can also lift the damper and gently tilt it left or right to get muting.
This is not the best procedure, but it does work sometimes.

If you have damper squeezing pliers gently squeeze the felts to that you have a
more prnounced wedging effect.

If this fails take a VERY sharp knife and cut off the rear damper.  Move the
rear damper in and out of its original position and see if you can get better
results. If you do glue it back on in that location.

If it is a higher partial sounding make sure there are not open strings in the
aliquot region by using plastic electrical tape or Scotch Magic tape to mask
off ALL tails ends, bass, middle, treble and treble speaking lengths.

Put you hand on the soundboard in various places to make sure that the board
does not have residual energy or standing waves at the frequency.

If none of this works let me know what your experiences are and what you
observed during and after.  There may be a clue in there somewhere.
      Newton
      nhunt@rci.rutgers.edu



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