Fw: Circle of Sound

[Michael Gamble]

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Re: Circle of Sound
----- Original Message -----=20
From: Michael Gamble=20
To: David Andersen=20
Sent: Monday, January 24, 2005 3:38 PM
Subject: Re: Circle of Sound


Hello all
I had this problem of a "ringing plate" about thirty years or so ago and =
fixed it by cutting a piece of 1 x 3, cutting out two notches deep =
enough to clamp over the offending strut and attach it to the next =
strut, (the struts are diverging, so a decent stiff attachment was =
possible) lining those two slots with thick bearing cloth and.... Hey =
Presto! ...gone...! The result may not look brilliant - but it worked =
and my client was delighted. I actually got him to make it!
Regards from a variable snow - to brilliant sunny day in my Sussex =
village...
Michael G (UK)
  ----- Original Message -----=20
  From: David Andersen=20
  To: Pianotech=20
  Sent: Monday, January 24, 2005 8:16 AM
  Subject: Re: Circle of Sound


    I've heard some struts from vacuum processed plate that ring for 2 =
or more second & in sympathy with certain frequencies.



  Absolutely, brother:  the "dirty little secret of the light-plate =
Yamaha C series grand pianos; some of those suckers have some incredibly =
strong plate resonance, especially in octaves 4.5 to 6.  And I have a =
confession to make:  if the customer doesn't complain, I don't say =
s**t---because what can I do?

  What can I do? Ron N.? Special mass loaders for the plate? A big fat =
dead guy draped behind the hitch and hanging off the back of the piano?
  What?  Please help me.  Please.

  David "what noise? I don't hear anything" Andersen 
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