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MMD > Archives > January 2001 > 2001.01.05 > 07Prev  Next

Golden Gate Park Carousel Organ, San Francisco
By Julie Porter

Bruce Pier wrote in the 010103 MMD:

> One of the reasons, I believe, you don't see many Gebruder Bruder
> Model 107s today is that they did not lend themselves to conversion.
> The scale doesn't come close to any domestic band organ scale.

What is the actual scale of the Style 107?  The instrument in Golden
Gate Park was playing Wurlitzer 150 rolls.  If there was more bass
notes in the original organ, would not Wurlitzer 125 rolls give better

> While the conversion of a book organ to play rolls would have been
> justified twenty-five or thirty years ago, in this day and age I just
> don't see it.  An off-the-shelf MIDI conversion (a Pell Harmonist,
> for example) would have the done the same thing without drastically
> altering the organ.

The roll reader seems like it would be reversible.  It does not look
like there was anything done to the pipework.  I am not exactly sure
how a keyless system works.  Is that the one with a star wheel?

I am designing a MIDI system of my own.  I did get an Octet board, but
I found the support a bit lacking.  (Current plans are to use this for
a W165 roll perforator.)

I did figure out how to make a simple system using the same
microprocessor and some octal multiplexers which drive optoisolators.
I do not have Laurent Corey's skill in designing the back end current
drivers, but the front end is quite simple to program.

Julie Porter

(Message sent Fri 5 Jan 2001, 20:25:45 GMT, from time zone GMT-0800.)

Key Words in Subject:  Carousel, Francisco, Gate, Golden, Organ, Park, San

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