<HTML><BODY STYLE="font:10pt verdana; border:none;"><DIV> </DIV> <=
DIV>Ron O. wrote<BR>The formula will allow you calculate the length of a =
duplex which is<BR>in-between two adjacent tuned duplex lengths (which we=
wish to avoid<BR>like the plague).<BR><BR>There you go all, out with you=
r spreadsheets. I know it's right<BR>because I've actually gone to the tr=
ouble of building a piano with<BR>this system and it works. String noise =
might suit those who are hard<BR>of hearing but I don't care for it at al=
l. Steinway might have the<BR>patent for tuned duplex lengths but who wan=
ts it? It only results in<BR>noise. I'm more interested in clean to=
ne. Anyone else wish to join me?<BR><BR>Ron O<BR></DIV> <DIV> =
Yeah, hey Ron just sign me up on the sustain fanatic/ less n=
oise bandwagon. If the piano has clean sound and lots of sustain it=
's possible to voice it as bright or mellow as one wishes with no worries=
mate. Ron ? how much is the spread sheet. I'm still working on the Stwy =
D ( actually it's been sitting) and wish to change the plate to eliminate=
as much of that Model D noise which is so problematic and so robs the su=
stain in octave 5 & 6. I'll no doubt have to grind of the originals a=
s they will be obstacles. This !933 D has the uneven string lengths in th=
e top 2 trebles due to the bridge design (staggered pins) .My guess =
is this was possibly another attempt to enhance sustain. Hmmm kill s=
ustain with tuned duplexes enhance it with uneven out of phase string vib=
ration. Also has the rear duplex matches the bridge pin staggers. I=
've seen Baldwin ( fts. from this vintage with exactly the same set=
up.( and problems)</DIV> <DIV> At this point I'm planning to make u=
niform string lengths and purchase new rear duplexes unless some one has =
an incredibly good argument against it. No----- .O.K. I'm changing it.</D=
IV> <DIV> At some point when it's complete I'll either show i=
t or at least report back on the outcome and we can all add that info to =
another collective piece of the techno pie.</DIV> <DIV> Thank=
s for the passion and input.</DIV> <DIV> </DIV> <DIV> &nb=
sp; Best-----Dale Erwin<BR></DIV></BODY></HTML>