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MMD > Archives > July 1996 > 1996.07.14 > 04Prev  Next


Stack Split in Aeolian Pianos
By Dan Wilson

This problem is real enough and not solved by changing tubes, because the stack split is thanks to the placing of the divider and if you try shifting tubes you just end up with a spare one at one end and no tube for the tracker-bar at the other. Plus the piano will transpose up or down a semi-tone !

English upright Duo-Arts (only made after 1919, I believe - before that DAs were imported) all have the low divide like Robbie's 88n, between Eb and E natural, the 88ns all have it between E & F. Examination of very early 1914 DA rolls here shows that they divided E/F but quickly changed. Gordon Iles who worked for (UK) Universal Music before WW2 had a story that there was no intention to have a different divide than E/F (44/44 notes) but the first batch of Weber Duo-Art grands to go out had a mistake in the drawings which resulted in the stack divide being incorrect. This was not discovered for quite some while, by which time it would have been too expensive to recall the pianos. So the rolls were changed instead. In his own rolls, both 88n and DA, E natural was always themed both sides at once so it would play correctly with either divide.

(By the way, someone here said the other day that no-one uses notes 1-4
and 85-88 any more. Not so - see the John Farrell HPC new issues !
He's always with Fats Waller tinkling away at the top.)

Dan Wilson


Key Words in Subject:  Aeolian, Pianos, Split, Stack

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