this line of thought is very interesting to me, as agraffes was what I first wondered about with this noise, but didn't do anything about. I considered changing one to see if it would make any difference. I guess it wouldn't hurt to do that...this only makes sense if the theory is that there's something operating with agraffe problems in the tenor region (plain wires) that's not happening elsewhere? It seems a bit odd to me that so many B's would have an agraffe-related problem in the same few notes. I just returned from a short trip away, doing some damper troubleshooting in a very nice 4 year old Hamburg B outside Glasgow. After finishing up the day with tuning and some voicing, the owner was quite happy with the improvement. But as he played up the scale he immediately noticed the same high ringing we're discussing here - on the D#3 - and pounced on it. I couldn't believe this same phenomena was haunting me again! I basically said, "sorry - this is something common to the B's and I'm afraid I can't help you with it (now, at least) except for a bit of voicing. Hopefully you won't notice it in actual musical contexts". Which is probably largely true; but still, I'd like to figure out what this is and be able to make it go away. People notice this sound; that one small section jumps out as having a different quality. Allen On Jul 10, 2008, at 8:14 PM, Kazuo Yoshizaki wrote: > I recently had this problem with an Essex grand although I don't know > if this is the problem that Allen is facing now. It had a noticeable > jing with forte. I loosened the strings and 'dressed' the inside of > the agraffes by tweaking the strings with a string hook, and the noise > was gone. > > On Thu, Jul 10, 2008 at 1:33 AM, <BobDavis88 at aol.com> wrote: >> >> >> Allen, I'm still thinking about this, and, although I don't know >> if it >> relates to the Hamburg pianos, there was a run of New York pianos >> in the >> seventies that had a poor agraffe profile. That is to say, the >> shape of the >> inside of the agraffe did not make a good termination. I have a >> couple of >> D's that exhibit this in the tenor. We restrung one, changing the >> agraffes, >> and it really cleared up the high metallic whistle. Inspecting the >> old and >> new agraffes under magnification really showed up the difference. >> >> On the other D, increasing the draft angle slightly by putting a >> center pin >> under the string (on the counterbearing felt) made a big improvement, >> although we'll still eventually want to replace the agraffes. >> >> Let us know when you find out for sure what it is. >> >> Bob Davis >> >> >> ________________________________ >> Get the scoop on last night's hottest shows and the live music >> scene in your >> area - Check out TourTracker.com! Allen Wright London, UK http://www.broadjam.com/akwright -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080712/a4d34856/attachment.html
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