Mass Loading Bridges

[Tom Servinsky]

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Terry,
Does mass loading the bridge work for the high treble end as well?
Tom Servinsky
  ----- Original Message -----=20
  From: Farrell=20
  To: Pianotech List=20
  Sent: Friday, February 03, 2006 11:13 AM
  Subject: Re: Mass Loading Bridges



  Here is a pictures of an assortment of brass-mass - all done from =
round stock, bandsaw and small drill press.



  Below is picture of them installed.



  Terry Farrell

  ----- Original Message -----=20
  > I'm finally getting around to working on the piano which had a boomy =

  > crossover from the long bridge to the bass bridge.  I'm envisioning=20
  > getting some rolled brass stock and cutting off pieces for=20
  > this.  I've cut aluminum with a carbide blade, I think brass might =
be=20
  > a little harder.  How difficult is this to do?  I'd drill a screw=20
  > hole in the center and temporarily set under the bridge until I get=20
  > the impedance I want.
  >=20
  > How do you pro's do this?  Where do you source your material and =
what=20
  > is your favorite means of machining it?
  >=20
  > Andrew Anderson
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