----- Original Message ----- From: "Erwinpiano" <Erwinpiano@email.msn.com> To: <pianotech@ptg.org> Sent: June 03, 2001 6:45 PM Subject: Fw: It won't be a Steinway anymore!/soundboards improving with age? > According to the 1955 reprint on sound board material in the May issue of > the journal the author states that new woods such as soundboard spruce feed > off the resin reservoir left in them, the older the wood the less resin.This > is not the first time I've heard this. At some point in time a soundboard > is at the point of no return or at least for sure diminishing tonal return > as the cells degenerate from force, atmosphere and resin depletion. And this was not the only inaccuracy in that piece. > The author also eludes to the subjective experience of the sound board > improving with time and that it might have something to do with internal > friction. Nor was this. > In retrospect I think it has to do more with the internal frictions > changing as the panel is under the downbearing force than any voicing or > tuning.( probably glue and lacquer curing) No, the internal friction doesn't change by holding the board under stress, but the wood fibers do take on a certain amount of compression-set. The strain on the wood fibers decreases as compression-set alters their shape and form. This changes the soundboard's impedance relationship with the string plane and alters the rate of energy transfer from the strings to the soundboard. > My own opinion, subjective as it is, is that playing music and the vibrational effect > on internal friction or through the cosmic alignment of wood cell fairies or whatever > has something to do with the tonal improvements, Right. It's the wood fairies. Regards, Del
This PTG archive page provided courtesy of Moy Piano Service, LLC