One thing that comes to mind is plate screws. I had a similar issue with a Samick grand, and (after a long and tortuous amount of troubleshooting over a couple years) found that tightening the lag screw at the end of the plate strut solved it. Certainly worth trying. (Your back of the piano comment stirred up the memory). Regards, Fred Sturm fssturm at unm.edu "I am only interested in music that is better than it can be played." Schnabel On Oct 16, 2010, at 12:43 PM, Robert Callaghan wrote: > Thanks to everyone for your suggestions on eliminating the "zing". > > Our PTG chapter members put our heads together and still couldn't > eliminate the mystery noise. We removed the damper wires on both > sides of the bichord (the highest one before the break), there is > plenty of clearance between the string and the bridge pins and > bearing bar underneath, the strings have been replaced, the bridges > and notching look good, the string's bridge pins are tight. It > seems very unlikely that the new strings would be flawed too, so we > could find no reason for this noise. It is a Grotrian grand and has > a beautiful sound with all types of playing except this one note on > heavy playing. I began to suspect the bridge cap, but this sound is > metallic. We all agreed it sounded like it was coming from near the > back of the piano. The only clue left is when we plucked the string > upwards it didn't make the sound, plucked sideways it did. It's > beginning to seem the only solution is just stop playing fortissimo! > > > > > ======= > Email scanned by PC Tools - No viruses or spyware found. > (Email Guard: 7.0.0.18, Virus/Spyware Database: 6.16090) > http://www.pctools.com/ > =======
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