SD-10 Problem

[Richard Brekne]

David Ilvedson wrote:

> Don't you think that a lot of the jangles we hear in pianos are caused by
> hard hammers bringing out the high partials which cause the duplex (tuning
> pin side between capo and pressure bar)to ring out more than designed?  In
> my experience hammer filing, fitting hammers to strings & voicing to round
> out the tone will do much to improve this "leakage" rather than muting etc.
>
> David I.

I would aggree with this... to a point anyways... Its the first thing I try when
I run into an over active front duplex. Seems like there is this "ideal"
hardness of the hammer. Any harder and the duplex starts whistling like heck.

Any of you folks seen Schimmels new "Triplex" scale ??

>
>
> > -----Original Message-----
> > From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
> > Of Ron Nossaman
> > Sent: Thursday, October 26, 2000 12:06 PM
> > To: pianotech@ptg.org
> > Subject: Re: SD-10 Problem
> >
> >
> > >I have personally never had a client complain about rear duplex.
> > Nor have I
> > >heard one myself that was offensive. Has anyone had to mute off a rear
> > >duplex because of "jangles"?
> >
> > In original configuration pianos, not in the shop - One, an old Kawai. I
> > muted the rear duplex on a new Yamaha about 20 years ago so the customer
> > could hear a difference when the action was shifted. They usually aren't a
> > problem.
> >
> >
> > Ron N
> >

--
Richard Brekne
RPT, N.P.T.F.
Bergen, Norway