string ringing, buzzing, etc.

[Bec and John]

Hi,

Thanks everyone for the replies! I'm pretty certain it's not the duplex 
scale, since if I mute it the sound persists.

It turned out the right string was not quite mated as the others, so I 
reshaped the hammer properly. It did seem to make somewhat of a 
difference, but the sound still persists.

So I decided to loosen the string and remove rust/build-up where the 
string goes into the agraffe, at the bridge pins and the duplex bar - 
in case it was rust of some sort. Still no fix.

I'm getting more curious about this, since as I said a handful of notes 
between middle C and the octave above exhibit this problem (though not 
nearly as bad). Could it just be over-worn hammers? The piano is about 
80 years old.

Thanks.

- John


> I'd say the Baldwin SF10 was a clue...try muting the tenor section of 
> the back scale.
>
> David I.

&

> John,
> Did you do anything to the wire at the bridge pins?
>
> Does it have a back duplex scale that is undamped?
>
> There is always the question of a possible impedance issue.
>
> Andrew

&

> John,
>
> After you did that, did you mate the hammer to the strings?
>
> Avery