Factory Presets: Effects Data, Micro-Tuning Scales, Program-Change Table
When the DX11 was shipped, it came with certain presets including factory-set effects (delay, pan, chord) and micro-tuning scales. These data were stored (only) in RAM and would get lost if they were overwritten or if the built-in battery became low and had to be replaced.
There is apparently not much online information available about these presets. The only sources I could find are at <http://www.sysexdb.com>. There is a DX11 section (web.archive.org link, 2020-11-12 and web.archive.org link, 2021-03-22), which contains several MIDI sysex files with related data. However, due to some technical issues at sysexdb.com, some files in this section are either too short (containing only every second byte) or too long (with added null bytes at every second position), and this behavior changed around February 2021. This means that some files can be obtained from the webarchive only from the pre-2021 captures and others only from the post-2020 captures.
First, let me list the relevant DX11 sysex file formats and the corresponding correct file sizes:
- EF (292 bytes): dumped with Utility > Exclusive > Setup Trans?(EF), contains 4 sysex sections (4 effect memories, each with a delay, pan, and chord setting),
- MC (316 bytes): dumped with Utility > Exclusive > Setup Trans?(MC), contains 2 sysex sections (2 micro-tuning scales: an octave scale and a full-keyboard scale),
- PC (274 bytes): dumped with Utility > Exclusive > Setup Trans?(PC), contains 1 sysex sections (1 program-change table),
- AL (882 bytes): dumped with Utility > Exclusive > Setup Trans?(AL), contains 7 sysex sections combining a PC, EF, and MC dump (1 program-change table, 4 effect memories, and 2 micro-tuning scales),
- (SY (79 bytes): dumped with Utility > Exclusive > Setup Trans?(SY), contains 2 sysex sections (2 system setup data tables).)
The data relevant for the sound of the original performance memories can be restored either from the AL dump or from the EF and MC dumps.
On sysexdb.com are:
- 1324.syx: AL (web.archive.org link, 2020-11-12)
- 1733.syx: AL (web.archive.org link, 2020-11-12), this is a corrupt sysex file, in which all 7 sysex start bytes (F0) are replaced by 3F.
- 1937.syx: SY (web.archive.org link, 2021-04-18)
- 1938.syx: PC (web.archive.org link, 2021-04-18)
- 1939.syx: EF (web.archive.org link, 2021-04-18)
- 1940.syx: MC (web.archive.org link, 2021-04-18)
- 1944.syx: AL (web.archive.org link, 2021-04-18)
(The webarchive links go to captures with the correct file size.)
Of these files, the contents of 1324.syx (AL), 1733.syx (AL, repaired), and 1944.syx (AL) are identical. However, the contents of 1938.syx (PC), 1939.syx (EF), and 1940.syx (MC) (which together are equivalent to an AL dump) are clearly different. So which dumps might be (closer to) the original DX11 presets?
At this point, I was indeed lucky and found an old sheet of paper from the late 1980s in a long-ignored shelf with some hand-written notes about at least some presets:
I cannot guarantee that these parameters reflect the original presets, but at least for columns III and IV they might well do. And these parameters match much better with the sysex file 1939.syx (EF) than with the AL dumps listed above.
So, it appears reasonable to provide the contents (1 program-change table, 4 effect memories, and 2 micro-tuning scales) of 1938.syx, 1939.syx, and 1940.syx (uploaded by Wayne Price, wprice) as candidate for the original factory presets. For completeness, the contents of 1324.syx are listed on this page.
If you should have additional or conflicting information, please contact me by e-mail <olaf@dtrx.de>; I’m going to collect any variants.
![[Valid xhtml 1.1!]](https://dtrx.de/od/valid-xhtml11.png){kind=small}
![[Valid CSS!]](https://dtrx.de/od/vcss.png){kind=small}