Mechanical Music Digest  Gallery
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Gallery > Tech > DuoArt

Announcement: End-of-Year Fundraising Drive In Progress

Our End-Of-Year Fundraising drive is in progress. If you haven't contributed to the operation of the MMD in the last 12 months, this would be a great time to contribute. There's a PayPal link at the bottom of each page on the website.

If you aren't sure when you last contributed, please send me a note using the contact form at the bottom of this page and I'll look you up in my records.

Thank you for your generous support!

P.S. While your support is needed and appreciated, you do not need to contribute to be a subscriber. If you have subscribed and aren't receiving your Digest, please use the contact form at the bottom of the page and let me know. Thanks!

1925 grand
Duo-Art Tubing Diagram
1925 Steinway Duo-Art Grand Piano
courtesy Eliyahu Shahar

1925top_a.jpg (24 kb)

These diagrams for the 1925 Steinway Duo-Art were drawn in 1956 by The Morse Equipment Co. of Hudson, Ohio.  The original drawings measure 42" x 30" (underside) and 30" x 24" (topside).  Each line has a number assigned with it, 1-88 being the notes, 101, 102, 104, 108 expression levels for accompaniment, 111, 112, 114 and 118 expression levels for theme, etc.  I  noted each line number in an Excel spread sheet, giving it a logical name and what it connects to (101: accompaniment dynamic level 1, tracker bar, duo-art off valve, accordian pneumatics valves, accordian pneumatics).

Top drawing:    1925top.jpg  (632 kb)
Bottom drawing: 1925bottom.jpg (582 kb)
Connection list (Microsoft Excel 5.0/95): 1925tubing.xls (31 kb)

03 June 2003

Home    Archives    Calendar    Gallery    Store    Links    Info   

Enter text below to search the MMD Website with Google

CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2017 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Pay via PayPal

No PayPal account required

Translate This Page

. .