[pianotech] Belly talk

Dale Erwin erwinspiano at aol.com
Mon Dec 3 08:34:42 MST 2012


Larry
  You bet
 We all like the sound of this piano top to bottom. Nice clear treble. lots -o- sustain. Nice bass despite the really short backscale lengths on the monochords. We Jolly looped those.
   Some things work when in our engineering minds we can't figure out how. One thing has stuck in my head that Del has said many times about what makes a soundboard work,.....it is mass and stiffness. 
 Another example is a Mason & Hamlin AA from  1951. I rebuilt 2 of these. Twins off the assembly line. Came from a school in Ark. This was built for my sister 11 years ago and I saw it last week. It new bridge caps, modest bearing on an original board. Board is basically flat as the central Calif  valley and yet it has the most glorious dumbfounding sound ever. Stuff works. 


Dale Erwin R.P.T.
Erwin's Piano Restoration Inc.
 Mason & Hamlin/Steinway/U.S. pianos


 
  



thanks for the images Dale.  Looking at the top two octaves of the piano it sure looks like an awful lot of bridge for so little amplitude in that area.  It looks like the bridge is even taller in the top section.  I would think this would absorb a lot of energy making for a weak sound up there.  So my question is this.  You say the piano had a good tone considering it’s size.  How’s the upper end on this one?  Is there a lot of hammer knock??  Just curious more than anything.

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20121203/e831f950/attachment.htm>


More information about the pianotech mailing list

This PTG archive page provided courtesy of Moy Piano Service, LLC