Carl: The piano had previously been rebuilt very well. It was a very nice instrument with new Renner parts, strings, etc. A couple of years ago the bridge was modified ala Wapin. Actually I participated in the process under the direction of Tim Coates and became a licensed Wapin installer at that time. Nothing additional was done to it, just the Wapin installation. It really does have a nice round, well focused sound with nice decay and a remarkable lack of those zings, and extraneous noises we usually associate with termination problems. I'm not particularly a Wapin evangelist, but this really made a nice and significant difference. dave *********** REPLY SEPARATOR *********** On 1/24/2002 at 7:29 PM Carl Meyer wrote: >What else was done to the piano along with the Wapinization? > >Carl Meyer Assoc. PTG >Santa Clara, California >cmpiano@attbi.com > > >----- Original Message ----- >From: "David M. Porritt" <dm.porritt@verizon.net> >To: <pianotech@ptg.org> >Sent: Thursday, January 24, 2002 4:59 PM >Subject: Re: Wapin bridge > > >> Yesterday I tuned a Wapin Knabe 6'4" that is really very nice. Round >> tone, smooth, slow decay even in the killer area. Very nice piano >> indeed. I tuned it before it was "Wapinized" and while nice, it was >> not what it is today. >> >> dave >> >> *********** REPLY SEPARATOR *********** >> >> On 1/24/02 at 3:54 PM Ron Nossaman wrote: >> >> >>It strikes me that the main thing about the Wapin arrangement is >> the >> >>near perpendicular disposition of the front pin. Without reading >> >>right through the patent I can't be sure if he says anything about >> >>the way the "bearing point edge" is cut and whether a small >> vertical >> >>drop is desirable (a feature Wolfenden admires in the practice of >> one >> >>maker, probably Ibach) or whether this angle should be at least >> >>steep, as it certainly is not on the Steinway. >> > >> >Yes, the vertical pin is the pertinent point. Tim Coates >> straightened me >> >out on this a while back. The purpose of the vertical pin is to >> steer the >> >string oscillations to horizontal, or parallel to the soundboard. >> This >> >slows energy transfer to the bridge/soundboard and extends sustain >> as a >> >result. >> > >> > >> >Ron N >> >> >> _____________________________ >> David M. Porritt >> dporritt@mail.smu.edu >> Meadows School of the Arts >> Southern Methodist University >> Dallas, TX 75275 >> _____________________________ >> _____________________________ David M. Porritt dporritt@mail.smu.edu Meadows School of the Arts Southern Methodist University Dallas, TX 75275 _____________________________
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