Thanks Terry... grin.. ya beat me too it. Farrell wrote: > Go to their website. steinway.com - Under "Technical" & then "Soundboard" > > Copied from S&S website: > > Effect of Cracks and Checks > > For this very reason a crack or check in a soundboard reduces the > soundboard's ability to amplify the vibrations of the strings only to the > extent to which the crack reduces the vibrating area of the board. > > Soundboard areas vary with the size of various pianos, but consider for > example a board with an area of 4,000 square inches, counting both surfaces. > Now assume that there is a crack in this board 35 inches long and one-eighth > inch wide, which would be an enormous crack. That crack would have an area > (counting both surfaces) of 8 3/4 inches, and so would reduce the air > disturbing area of the board by less than 1/4 of one per cent, an amount > utterly negligible. > > Here we have considered the effect of an enormously big crack. A dozen > ordinary cracks, even if they extended from end to end of the soundboard, > might have about as much effect, certainly no more. So long, in fact, as the > structure of the soundboard remains solid, with ribs and bridges adhering > correctly to the surface of the soundboard, and with the entire periphery > rigidly fastened into the frame of the piano, the question of cracks is > utterly unimportant. > > FYI! > > Terry Farrell > Piano Tuning & Service > Tampa, Florida > mfarrel2@tampabay.rr.com > > ----- Original Message ----- > From: <kam544@flash.net> > To: <pianotech@ptg.org> > Sent: Sunday, October 15, 2000 8:39 PM > Subject: Re: Rebuilt Steinway > > > >Small cracks in soundboards are in themselves nothing to be concerned > > >about, and > > >indeed really nothing to even bother repairing outside of cosmetic > issues. > > >Steinway themselves say this and have publicised information to that > effect... > > >Richard Brekne... > > > > Richard, > > > > I'd be interested in reading this information you say Steinway publicises > > concerning cracked soundboards. Would you please provide the reference > > source? > > > > Keith McGavern > > Registered Piano Technician > > Oklahoma Chapter 731 > > Piano Technicians Guild > > USA > > > > > > > > -- Richard Brekne RPT, N.P.T.F. Bergen, Norway
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