negativ curved soundboard

[Ron Nossaman]

> The piano was renovated at SAP in Poland. The duplex bridges where not 
> installed correctly: they started at the left and end up with one string 
> left without, unisons don’t fit on the same duplex,  anyway this is 
> already a main reason to complain. Some comments on this duplexproblem 
>  related to tuningstability are welcom.

Duplex positioning won't affect tuning stability. A concave 
crown likely will.


> The soundboard is negativ crowned. I think: soundboard originlly dried 
> for Japanese market, in renovation at SAP Poland extrmely dried out, 
> restrung with to much downbearing and finally collapsed negativ, any 
> other thoughts about why a soundboards becomes negativ crowned? 
> Custommer payed 15.000 EUR for this instrument,

> Should he accept the fact of negativ crown? Will the board get even more 
> negativ figures in the future? Any experience how negativ crown 
> influences the sound and why?

Whatever killed it, the soundboard was dead when she bought 
it, is still dead, and will likely continue to be dead for as 
long as she owns it unless it's replaced with a new and 
working one. It doesn't matter how much more negatively 
crowned it gets in the future, it will remain dead. She should 
have had someone who knew what they were doing look at the 
piano before purchasing it, as she did not get a good deal. 
Her options now are to put up with whatever sound and 
stability she gets out of it, or to have the soundboard 
replaced, at which time the duplex bars can be straightened 
out too. I suggest it not go back to SAP for the work.

Ron N