duplex

[DALE ERWIN]

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----- Original Message -----
From: DALE ERWIN
Sent: Friday, October 26, 2001 8:01 AM
To: pianotech
Subject: Re: Was Voicing M&H BB/ Now tuned duplexes
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Hi Dan
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 Are  you referring to the front or rear duplexes? I know you've studied =
this a fair bit but I think after hearing Ron o. ,Ron, N. , Del, John Har=
tman and others I believe there is enough evidence that the front duplex =
being tuned is a detriment to sustain. The sympathetically vibrating stri=
ng segment at the front duplex is largely responsible for drawing energy =
from the vibrating segment ,reducing sustain/power  and creating more buz=
zing than pianists can tolerate. This segment would benefit greatly fom b=
eing detuned.   I've noticed than in Mason BB's from different era's the =
front duplex went from being in a tuned configuration to on of equal leng=
th string lengths in the front duplex. In the latter the tone is cleaner =
with no buzzing and excellent sustain characteristics.
   As to the rear duplexes having a significant effect on tone ,at least =
for me the jury is still out. If all other aspects of the pianos tone pro=
ducing system are set up well the overall increase in  performance to me =
is not enhanced significantly. However as has been discussed at length on=
 list has been the detriment of too short of a back scale choking /restri=
cting bridge movement thus tone quality ,power etc. Convince me otherwise=
. I'm open minded.
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    Regards----Dale Erwin
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----- Original Message -----
From: Duplexdan@AOL.COM
Sent: Thursday, October 25, 2001 11:45 PM
To: pianotech@ptg.org
Subject: Re: Voicing M&H BB
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Voicing a M & H is not only to be construed by dealing with the hammers. =
if
the duplex scale is not tuned correctly, the tone can never achieve its
maximum potential. Ask Paul Monachino.

Dan Franklin, RPT

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