Yamaha Duplex Scale

[Brian Henselman]

I tried tuning duplexs once on a C5, and couldn't get them to budge.  Ok, so
I let down the tension and pulled on set of duplex (THEY ARE PINNED TO THE
PLATE!).  At least this 15 year old C5's was!  There was a hole drilled into
the plate and a little guide nipple on the back of the duplex plate.  I'd
call and comfirm that they are moveable.  This set wasn't!

Be careful-
Brian Henselman, RPT
musicmasters@att.net
Austin, TX

>>List,
>>
>>This may be a stupid question, but what are the correct pitches for a
>>Yamaha duplex scale?
>>
>>Mark,
>
>No, not stupid at all, but it may be un-answerable. What are the correct
>pitches for any of the unisons in Yamaha pianos, other than A-4? The rear
>duplex is theoretically supposed to be some partial of the speaking length
>to sing along and augment the overall sound. "Tuning" them may help, at
>least some folks think so, but it's really not possible to keep them in
>tune with the speaking length. There's about a week's worth of reading in
>the archives on the subject if you want the gory details. Del also
>published an article in the Journal on the subject that sums it up more
>succinctly. As for the Yamaha specifically, measure them and compare
>against the speaking lengths. Then do the math. Or pluck and ponder.
>
>
>Ron N