> To: pianotech@ptg.org > Date: Thu, 25 Sep 1997 21:16:23 -0400 > Subject: Re: Capo bar noise > From: rmartin30@juno.com (ralph m martin) > Reply-to: pianotech@ptg.org I have come across new Steinways while prepping that had a sort of hide glue drop, except it wasn't hard that they used to reduce this noise. Don't know what it is though... David ilvedson, RPT Pacifica, CA > Hi Rob > > ........and yet other techs use a small drop of white glue on each > string. > > Ralph Martin > On Thu, 25 Sep 1997 16:48:21 -0400 "Zen Reinhardt" > <diskladame@provide.net> writes: > >Hi Rob -- > > > >Sometimes much of the noise you've described can be reduced by putting > >something on the strings in the front duplex. Some people use > >vasalene or > >other forms of non-drying goop. Some people put on a few coats of > >clear > >nail polish. The theory is that the stuff prevents only some of the > >partials from coming through so that the overall tone of the notes in > >question is not completely killed as you noticed with muting off the > >front > >duplex. It's frustrating, I know ... hope this helps. > > > >ZR! RPT > >Ann Arbor MI > >diskladame@provide.net > > > >---------- > >> From: Rob Kiddell <atonal@planet.eon.net> > >> To: pianotech@ptg.org > >> Subject: Capo bar noise > >> Date: Sunday, September 21, 1997 3:56 AM > >> > >> Greetings list, > >> > >> I'm currently working on prepping a new Baldwin L grand > >(6'3"), and > >> there is a problem with excessive high partial noise from the first > >> section of strings above the agraffe section. Simply put, it is an > >> excessive high partial ringing that is absent in the agraffe > >section, > >> but becomes immediately apparent in the Capo bar section. This noise > > > >> is so harsh as to qualify for ear protectors on a ff blow. It is > >> amplified by the front duplex section between the Capo bar and the > >> first plate ridge past the tuning pins, but muting this kills all > >> high end frequency and leaves the section lifeless. Hammers are > >hard, > >> but voicing (I've tried several approaches) only diminishes the > >> overall hammer volume, the amount of the high end noise remains > >> consistent with the overall volume of the note, either mellow, > >medium > >> or bright. This noise is also evident when the string is plucked, so > > > >> I feel hammer voicing is not the solution. I have seen this problem > >> before on Baldwins, but strangely enough, the identical 6'3" piano > >on > >> the sales floor exhibits none of this "noise", yet the front > >> duplexing section on this piano is amplifying high partials as it > >> should. > >> I have spaced strings along the capo bar, streched > >> strings, seated strings, muted strings, yet everything seems to come > > > >> back to the Capo bar. Before I begin filing the Capo bar, are there > >> any thoughts out there regarding this or similar problems? > >> > >> > >> Rob Kiddell > >> R.P.T., P.T.G. > >> C.A.P.T. Student > >> Edmonton, Canada > >> http://www.planet.eon.net/~atonal/atonal.html > > > >
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