[CAUT] Fiberboard

[Douglas Wood]

I believe it is about clamping/damping the string close to the  
agraffe. The distance can make a difference. There is a local tech  
who likes to put a brass rod under the strings at about 3/8 to 1/2  
inch from the agraffes when restringing. I had a customer with one of  
these pianos who was VERY displeased with the sibilance this  
produced, so after setting everything else up as well as I could  
(regulating, voicing, etc.) I still got to extract the rod.  Fun. But  
the customer was much happier. My impression was that having that  
whole section undamped made far more difference than I'd guessed  
based on just one note. But do listen to individual notes with and  
without your finger pressing close to the agraffe for the general  
effect.

Doug


On May 17, 2007, at 4:46 PM, Jon Page wrote:

> >the back side of this (closest to the agraffe) needs to be high  
> enough that you
> >cannot get your fingernail between the strings and the cloth. It  
> does seem
> >to me that those pianos that do not meet this criterion tend to have
> >more agraffe noise in an unpleasant way.
>
> The two I've done so far have had no problems but that's not a  
> large sampling.
> But I don't see the advantage to a friction point so close to the  
> agraffe.
> -- 
>
> Regards,
>
> Jon Page
>

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