Front duplex noise

[antares]

Hi Doug,
in my humble experience it might be wrong to mute the capo, as it was
designed especially to 'give' sound instead of 'killing' it by putting in
the wedges or strips.
The capo section makes the tone more rich, but also more complex, just like
the duplex system (or should I say 'complex'?)

As far as I understand the 'buzz' is created by a rattling of the string
and/or an energy problem caused by an uneven contact between the hammerhead
and the unison.
This is an old problem and one should be able to solve it (temporarily) by
carefully fitting the hammer to the strings (either by moving the strings up
or down, or filing), tuning, and then voicing. At least that is how I have
learned to get rid of this buzzzzzzzzzzzzzzzzzzz

Antares



> From: "Doug Mahard" <nlm@csu.cted.net>
> Reply-To: pianotech@ptg.org
> Date: Fri, 14 Apr 2000 22:23:30 -0400
> To: <pianotech@ptg.org>
> Subject: Front duplex noise
> 
> My weekend for questions I guess.
> 
> First appointment today was a 1986 Young Chang 7' grand.  Noticed a "tiny"
> sound in the capo bar area and when I put my finger on the strings in the
> front of the capo bar the noise went away or was greatly reduced.   I cut up
> a new mute strip I had and wedge it under and against the front underside of
> the capo bar effectively cleaning up the sound of that area.
> 
> Next appoinment was a 1916 S&S M same thing but not as bad.  Didn't do
> anything here.
> 
> What causes this and would it be more effective to braid some cloth through
> the strings rather then the muting technique describe above?
> 
> 
> Doug Mahard
> 
> PS Did anyone hear the NPR show "What Du Ya Know" last week with Michael
> Feldman.  The young kid playing jazz guitar was amazing.  Took John Tulane
> and his band to a whole other level.
> 
>