S&S D Duplex

[Sarah Fox]

Hi Dan,

I'm afraid that I'm behind responding to posts and probably won't catch up.
(I've got too many pots on the stove at the moment, so to speak.)

Contrary to your take on my writings, I do not suffer from this
"duplexophobia" condition.  I really don't have many expectations on the
subject.  I do expect that sustain is improved with the unmuting of the
duplex, which I *think* I've already observed in my own piano.  Whether the
sustain will further be lengthened or the tone improved by tuning the duplex
is another matter.  My thought is that it couldn't hurt, so I indeed intend
to do it.  However, my lack of expectations in this regard hardly makes me a
duplexophobe, IMO.

I appreciate all the input you've offered, and I look forward to seeing what
my piano can do with new hammers & shanks, new strings of appropriate
diameter, leveling, regulation, etc., etc.... AND adjustment of the
aliquots.  I'll let you know how it turns out.

Peace,
Sarah


----- Original Message -----
From: <Duplexdan@aol.com>
To: <pianotech@ptg.org>
Sent: Tuesday, November 19, 2002 10:59 PM
Subject: Re: S&S D Duplex


> Robin and Sarah,
>
> Your technical dialogue on the physics of vibrating strings is most
erudite
> and interesting to read. However, as you know piano tuning has a very
> practical side in which actual practice  is the bottom line of any
> discussion. So I will chip in a few more cents helping to relieve your
cases
> of duplexophobia.
>
> 1. It may be that your contemporary understanding of physics is greater
than
> that of Hermann Helmholtz and CFT Steinway, but it must be said that the
> results of developing and incorporating  this feature have had tremendous
> impact in the piano world.
>
> 2. From actual practice privately and in my PTG seminars as well as from
> testimonials of established technicians who practice the tuning of duplex
> scales, I can categorically state that when all other features such as
> strings, hammers, board, action tuning are correct but the duplex is out
of
> tune, by tuning the duplex the sustain increases from 100 to 300%. That is
a
> tone that lasts 3 to 4 seconds after tuning the duplex scale will last
from 6
> to fifteen seconds.
>
> I am encouraged by your interest, and wish to point out that it would take
> less time to actually tune a duplex scale than to write (and for me, to
READ)
>  the dissertations. But you'll never collect $200. if you don't get past
GO.
>
> Good luck,
> Dan Franklin
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