Buzzing capo duplex

[David's Email]

I think that a lot of the leakage problems can be addressed by voicing the
hammer.  Compacted hammers, too bright tone, too hard hammers etc. cause an
overload of high partials which resonate the front duplex.  A deep stitch
behind the string line will often round out the tone and eliminate the
leakage.  A test sugar coating the hammer to see if the buzz lessens will
show if this will help.  I find that seating at the front capo bar can help
also.  On another line, I keep coming across Korean & Japanese pianos with
fuzzy tone and instability.  I little careful seating at the bridge focuses
the tone and improves the stability.  I mean when you can visibly see the
string drop and the pitch drops 7 cents...you have problem that needs
addressing.  Routine seating of strings is unwarranted but it can do
wonders...even for false strings.

David Ilvedson


----- Original Message ----- 
From: "Susan Kline" <skline@peak.org>
To: "College and University Technicians" <caut@ptg.org>
Sent: Saturday, October 18, 2003 9:21 AM
Subject: Re: Buzzing capo duplex


> At 04:56 PM 10/16/2003 -0400, you wrote:
> >The late Ernie Juhn used to do a quick fix by putting a little "crazy
glue"
> >on the string segments just in front of the capo bar - behind the string
> >rests.  He put just a little of it on the open lengths, NOT on the capo,
> >and NOT on the string rest.  What that did was change the mass of the
> >string just enough to get it off resonance with that particular partial,
> >and make it quit buzzing, without deading the tone very much.
>
> This works, sort of, using white glue as well.
>
> However, I just don't see the change in mass being the cause of the
> improvement.
> I think that the glue, being slightly flexible, muffles the string, just
> like a
> fold of felt would, however not quite as much. It's not exactly what I
would
> call a fix, but it does help you get down the road in a pinch.
>
> Just MHO.
>
> Susan Kline
>
> _______________________________________________
> caut list info: https://www.moypiano.com/resources/#archives