Treble Resonator (Treble Tone Resonator)

[Isaac OLEG]

Measured with a dial, the crown can increase a very little, but it is
umore the boad tension that counts there I guess.

Nowadays it stiffen the zone near the last plate strut. The conceptor
of the ttreble resonator say you uses it only when voicing (leaving it
untensionned when stringing) and only when you are in the "wall" and
can't obtain no more from the voicing.

You have to find a balance, as the effect is not extending all along
the treble, and to constrained is not good.

I've been expalined that the Steinway soundbord was installed under
tension with some kind of turnbuckles that push the board and gives it
crown along the long dimension (the ribs can't go in their place -
from above- until the board is forced from the pinblock side and
popped in place.

The turnbuckle is giving the same tensionning effect locally I.M.O.



Isaac OLEG

Entretien et reparation de pianos.

PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77

> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Richard Brekne
> Envoye : samedi 5 juillet 2003 22:47
> A : Pianotech
> Objet : Re: Treble Resonator (Treble Tone Resonator)
>
>
> Checked out what I could find on this.... very sketchy stuff, and I
> remember the discussion... a loose end tangent of the Stienway Bell
> Resonator discussion ealier this year.
>
> I gather we arent talking about increasing crown or
> anything... but I
> was just curious as to thoughts about how it really
> supports the belly
> rail, and how this kind of support helps the sound.
>
> Cheers
>
> RicB
>
> Keith McGavern wrote:
>
> > At 10:13 PM +0200 7/5/03, Richard Brekne wrote:
> > >... wondering if any of you have any experience with
> > >them ...
> >
> > RicB,
> >
> > There's some info in the archives:
> >
> > http://www.ptg.org/archive/pianotech.php/
> > Subject: Re: Killer Octave Question & Re: D hammers
> > April 2003
> > Guy Nichols
> >
> > --
> > Keith McGavern
> > _______________________________________________
> > pianotech list info: https://www.moypiano.com/resources/#archives
>
> --
> Richard Brekne
> RPT, N.P.T.F.
> UiB, Bergen, Norway
> mailto:rbrekne@broadpark.no
> http://home.broadpark.no/~rbrekne/ricmain.html
> http://www.hf.uib.no/grieg/personer/cv_RB.html
>
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
>