May sound like a beginners answer but have you checked the soundboard's glue joint connection to the inner rim? Greg Newell At 12:08 AM 3/1/2006, you wrote: >The catastrophic action failure thread may have merged >into a discussion of seasonal loss of crown/db and >therefore I guess sustain/tonal quality. > >Here are observations about two terrible sounding NY >D's I am servicing; Plus, a question about finding the >culprit. > >#1. I went to a recital this evening at one of the >univ. for which I do piano service. The NY D (mid >1970's era) was more dreadful than usual, particularly >in tonal fullness. There was the initial splatter of >sound, quite thin and short, in octaves 5 and 6. It >sounds this way I guess at other times of the year but >I really noticed it tonight sitting out in the >audience. When I tune, I zero in so much on the >tuning that I turn off my voicing perception. There's >no money in their budget for improvements at this >time, unfortunately. > >As I sat there, I wanted to investigate, does this >piano need, voicing or new hammers or a new board? >Hammers have been replaced (by a previous tech) and >aren't that worn. The SB has a crack in it that is >definitely more visible during this time of the year. >Yesterday when I tuned somewhere here in the area it >was 28% rh at 71 deg. Could be a little different I >suppose from location to location. > >#2. The second D, which is bothering me greatly is in >a church. It's also a 1970's model. I put all new >hammers and wippens in it replacing teflon parts and >problems about 2 years ago. I hoped for great >improvement in tone. While I got some, the piano >still lacks power terribly. I am in the process of >adding keytop/acetone which is giving some help but >still not what I want. When I pluck a string it's not >much or any different than the hammer strike. A >rocker gauge on the bridge of this piano indicates >there is downbearing. This one has a Dampp Chaser, the >univ. one doesn't. > >Do you always check crown/downbearing a particular >way: under the board with a thread; rocker gauge on >bridge; thread from agraffe to hitch pin; Lowell gauge >or other? I used different methods, but wonder which >gives the best reading. > >Bob Hull > >--- Ron Nossaman <rnossaman@cox.net> wrote: > > > > Regarding Steinway, the loose pinning (currently > > 20% RH at > > > this particular venue), coupled with raising the > > hammer > > > line several mm (key-dip; a very skinny .400") > > brought > > > about the dread CAF on several notes. (see Eric's > > test) > > > > Something I've been meaning to ask. New York > > Steinways, I > > assume? 20%RH at 70° puts soundboards at 4.5%MC. > > That's at or > > below (depending on who you talk to) what they were > > originally > > dried down to for compression crowning with flat > > ribs. There > > shouldn't be a lick of crown anywhere in these > > pianos in these > > conditions, and they ought to be mostly killer > > octave and > > sound thoroughly terrible right now. Do they? > > > > Ron N > > _______________________________________________ > > caut list info: > > https://www.moypiano.com/resources/#archives > > > > > >__________________________________________________ >Do You Yahoo!? >Tired of spam? Yahoo! Mail has the best spam protection around >http://mail.yahoo.com >_______________________________________________ >caut list info: https://www.moypiano.com/resources/#archives Greg Newell Greg's piano Forté mailto:gnewell@ameritech.net
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