Technical problems and their resolution

Localization of Defects or Suspected Such on Yamaha C5

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Luciano

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Opening post by Luciano

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Hello everyone,

I recently purchased a beautiful Yamaha C5 piano, used for concerts for only a short time, with a very high serial number.... practically new.

After about a month I had it tuned, but I notice some defects (or at least things that make me wrinkle my nose!!!) that I am intending to resolve.

In the second octave to the left of middle C (the first copper strings!!!!), there are some notes (Bb, A, Ab, G, and E) with a sound that I personally define as "not clear" compared to the others in the rest of the keyboard; they seem to sing less, and they have the characteristic of making a sort of clearly perceptible metallic vibration felt. From the technician who tuned it for me, I heard that it could be a defect in the copper winding of the strings; the same technician tuned the piano and spent a lot of time on this octave, which seemed to be more out of tune compared to the rest of the keyboard. What could I do to obtain an octave with a "singing" quality adequate to the rest of the keyboard?.

Another point: it happens that when using the "sustain" pedal, I hear the "noise" of the felts rubbing against some strings on certain notes, so much so as to produce a minimal excitation with the consequent, barely perceptible (I am a maniac about this!!!!!) production of sound. Is it normal for it to be like this?

Thank you for your attention and for your patience in reading this long message.

(p.s. since this is my first "REAL" piano, I can't quite understand to what extent I should worry......)

Regards.

Luciano.

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Reply 2 by pianoexpert

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It is difficult to answer without seeing the piano. A concert grand placed in a house can reveal sounds that seem like defects, given the limited space. These measurements should be quite precise, but copper strings can have a defective sound. However, I don't think so. One needs to see the history of the piano and if it has been incorrectly tuned. Generally, this instrument is well-balanced. The fact that it cannot produce a "cantabile" (at least as far as I understand) could suggest that the hammers have been voiced. I would like to see a photo of the hammers and hear an MP3. Is it possible?

The release of the dampers can be regular, but it would need to be seen. We think that in digital pianos this noise is simulated!!!!!

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Reply 3 by Luciano

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...to photograph the hammers, a photo from above is enough (obviously adequately close up!!!!!)?....otherwise I wouldn't know how to remove the hammer rail.....

as far as the mp3 file is concerned, I will try to send it in the coming days....

thanks for your attention.

Luciano.

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