Wurlitzer break tuning

Jim Coleman, Sr. pianotoo@imap2.asu.edu
Fri, 09 Nov 2001 13:15:17 -0800 (PST)


Hi to Patrick Poulson and all:

The SAT III has the easiest method for dealing with the wild 
breaks in the stringing scale of such pianos as the Wurlitzer and 
the Acrosonic. The Double Octave Beat control can be utilized on 
the fly to handle the foreshortening of the plain wire notes in 
the temperament octave and then a negative DOB can be utilized to
shrink the octave going down into the wound strings. Works real neat.
It keeps the speed of the M3rds fairly close and minimizes the 
variation in the 4ths and 5ths. The octave are slightly expanded 
in the lowest plain wires and compressed in the highest wound 
strings to accomplish a smooth intersection. If one does not lower 
the lowest plain strings, then the double octave mismatch can 
become terrible, not to mention the triple octave.
 
Maybe I'll do a video on that if there is enough interest.

Jim Coleman, Sr.


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