mysterious metal clips

William R. Monroe pianotech at a440piano.net
Thu Nov 16 15:32:43 MST 2006


Robin,

Welcome to the world of Pitchlock (www.pitchlock.com)

The clips are intended to remedy (in this case) poorly matched bass strings to avoid false beatings, by coupling the strings.

Best,
William R. Monroe



  Greetings all,

  I was recently tuning a Kawai GE-1A and noticed that three bass bichords had small metal clips attached to and connecting both strings in front of the agraffes. I do not believe I have ever seen this before. >From their size and shape, it was obvious that their placement was intentional and not the result of some rather odd looking staples or something falling into the piano. They would slide easily enough along the strings but were gripping the strings with enough force to prevent easy removal. I found little or no effect in tone or phase when I moved them back and forth a bit on the strings. Only three notes had these "clips". 

  If anyone here is familiar with this, would you kindly post a reply???

  Thanks, one and all.
  Robin Blankienship
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