Hi,  Barry Dennis wrote in 031122 MMDigest:

> Hi Bernt:  What is the documentation you found concerning the Duo-Art
> Bass/Treble split?  Since I started this latest thread a few weeks
> ago, I have appreciated all of the responses to my questions about
> this issue.   As I previously indicated,  when I initially posted
> my message, I checked about six Steinway Duo Art stacks, (both 80
> and 88 note), and they all have the split at either 41/39 or 45/43.

As mentioned, I found it in a section of the Vestal Press Duo-Art
collection binder.  It is mentioned in the first manual therein:
'Duo-Art preliminary Instruction and Adjustment Manual'.  It is not
mentioned in any of the other documentation I have collected over
the years.

For correctness, we should mention the split point in piano notes
[of the 88-note keyboard] only.  This applies the same to any number
of notes in the stack.  The split is between notes 43 and 44.  This is
equal to a total of 43 notes in the left half and 45 in the right half.
The notes in question where the split is, is apparently D# and E.

Perhaps you can verify your findings once more?

Kind regards,
Bernt Damm
Cape Town