***coupled strings

[Keith Roberts]

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I attended his class at the Ca convention. Strong attendance by the =
Renner all stars and factory reps.=20
One of the possible uses brought up for this was to stabilize a broken =
wire replacement for a longer time. Such as for the two week interval =
between calls or the second half of a concert. A unison with a coupler =
was detuned until a slight roll could be heard, then the coupler was =
removed. I believe there was almost 3 cents difference between the =
strings. That would mean a coupler could handle a 6 cent change in pitch =
of a wire. Of course the overall pitch of the coupled wire changes =
slightly too.
Keith Roberts
  ----- Original Message -----=20
  From: Jason Kanter=20
  To: Pianotech=20
  Sent: Sunday, March 07, 2004 11:00 AM
  Subject: ***coupled strings


  Curious if anyone has an opinion about the "string coupling" technique =
that was the cover story on last month's Journal. Seemed to me that =
while the coupling might help a tuning seem to last longer, the next =
tuning might be unduly complicated by the coupling. Is anyone doing =
this?

  Jason

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