Grotrian Cymbalese

[Richard Brekne]

Thanks again Ron for your comments, I will get back to you after I get a chance
to check this out a bit more. I had kinda suspected the second front "duplex"
(there are two u-bars after the termination, one an inch from the
aggraffes/capo, then another about 4-5 inches further towards the tuning pins.)
Plucking strings in any of the three areas behind the termination gives a very
clear and ringing tone, with substantial sustain, especially in the tenor, and
lower treble. The back duplex is very short, so I hadnt really thought that was
the place to look, but I will check it out.

Aside from just muting off, (assuming the front area is also part of the
problem) Any suggestions for redesigning this front double u-bar configuation
?  I have a feeling its the source of the rendering problem with this piano as
well.

Richard Brekne
I.C.P.T.G.  N.P.T.F.
Bergen, Norway

Ron Nossaman wrote:

> > There is no felt muting of any duplex section
> >anywhere on the instrument.
> ---------------------------------------------
> >Richard Brekne
>
> Richard,
> I had a creeping feeling that I was overlooking something here. Going back
> to your original post, it now seems fairly likely to me that the noise you
> described is coming from the back scale of the low tenor. I have restrung
> pianos, especially larger pianos, without muting off the backscale in this
> area to see what would happen. The result was occasionally a noise enough
> like your description to be a plausible cause. The clue is the second delay
> between the note being played, and the secondary noise. Front duplex noise
> in the low treble tends to be more immediate. It's easy enough to braid off
> the area, even though you have to do it through the bass strings, and see
> if the noise goes away. Wherever it proves to be coming from, you can do
> some selective muting with masking tape to isolate the source before trying
> a fix. The more information you have going in, the better your chances of
> affecting a cure, or at least ascertaining whether a cure is likely or not.
> It helps somewhat to know what it is you're trying to fix.
>
> Ron N