Unstable C5 Grand

[Allen C Birchler - Piano Tuner]

Try tuning it with something like TuneLab, making sure you thump the insides out of each string being tuned - (us a double ended hammer head to hit the keys with, I end up with sore fingers without it).  You can get the string to drop with a mighty strike up to 10-30 cents, and yes use ear plugs. Run the display the same speed sharp as the speed it has fallen flat and smash it and it should fall into stable tune.

Yes, tuning 100% by the computer is not my style but the result is better due to the fact it has let you set not only the pin but also the string. Time taken on a really bad piano (from china etc) is about 2 hours, but the result is there.

Allen B

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> > The piano is very bright and needs voicing, but
> > the music director likes this bright sound.
>
> The brighter the sound, the harder they play the less stable the unisons will
> be.  You may need to take the piano down a little in that region and see how
> it
> stays.
>
> You might consider lubricating the strings in that area with a little Protek.
> Do this, with a very small artists brush, each time yo tune and see how that
> helps.
>
> Check the plate screws and bolts, the fit of the block to the plate in that
> area.  If this is all normal try jacking up the block in that area and
> tightening the screws again.
>
> The brighter the sound the less hard you tend to hit the keys.  Put in some
> ear
> plugs while you tune this area and you might find it a little more stable.
>
>                 Newton
>