[pianotech] What is bloom,

[Tom Servinsky]

I've relied solely on the pluck test for years. I feel it gives the best true test of the board activity.
Tom Servinsky
  ----- Original Message ----- 
  From: PAULREVENKOJONES at aol.com 
  To: pianotech at ptg.org 
  Sent: Friday, March 18, 2011 11:28 PM
  Subject: Re: [pianotech] What is bloom,




  In a message dated 3/18/2011 9:08:15 P.M. Central Daylight Time, david at davidandersenpianos.com writes:
    I can't believe that it's just Erwin and I who pluck strings, in the method described below, to assess soundboard health. All this speculative
    sorta scientific wondering is missing the point. Good soundboards produce a bloom or a swell, a strengthening pulse, an added sustain, when the string is plucked, usually within 2 seconds of the pluck. 
  Dave, I've been doing this for years, but my "rule" is the 1 or 2 second rule---does it pop at one or two seconds? After 2 seconds is a bad sign and almost always with little energy. 2 seconds for the midrange, and 1 second for the treble. Make sense?

  P
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