AOC P/N 033-0090
1
Rev.
10/99
OWNER'S MANUAL
MDS-EXPANDER™ II and MIDI DIVISION™ II
I.
GENERAL
MIDI
INFORMATION
The Allen MDS-Expander™ II and MIDI-Division™ II are basically the same devise. The
Allen MDS-Expander™ II is a stand-alone unit with finished wooden sides. The MIDI-
Division™ II provides the same features and is installed as part of the organ in a drawer.
For this manual they will both be referred to as the MDS-Expander™ II. They both
respond to MIDI note and volume change messages. Although traditional organ
keyboards have a range of 61 notes, many MDS-Expander™ II voices will respond to the
total MIDI range of 128 notes. This allows the MDS-Expander™ II to be used with MIDI
keyboards having a greater note range than traditional organ keyboards. Some voices
have been limited to the range of their acoustic counterpart for authenticity. Certain voices
(such as PIANO) are also velocity touch-sensitive when used with a MIDI device that
transmits velocity information. On Allen MDS, Renaissance and some Protégé organs,
velocity information may be sent via the organ's expression pedals. On organs that
feature OST™ keying, velocity information is sent via the organ's keyboards. For more
information on this subject, consult your organ’s specific owner's manual.
II.
BASIC
FACTS
MDS-Expander™ II voices are analogous to organ stops. Under the "DIV" abbreviation
located on the front panel, for example, are listed SW, GT, PD, and CH, an indication of
the organ division that will control the voice shown next to it. These division abbreviations
may be changed if the settings do not correspond to the organ that the MDS-Expander™
II is connected to. See "MIDI FUNCTIONS" section of this manual for details concerning
this procedure.
A different voice may be assigned to each MDS-Expander™ II division, or more than one
division may share the same voice.
The MDS-Expander™ II memory contains 60 preset groups. Every preset contains a
voice selection for each MDS-Expander™ II division.
Presets are selected by pressing the PRESET button. Use the UP or DOWN button to
move to the next or previous preset. The PRESET button will also function in the same
fashion as the UP button, moving to the next preset each time it is pressed. Presets may
also be selected from the organ's pistons. Preset contents may be altered as explained in
the “MODIFYING MDS-EXPANDER? II PRESETS” section of this manual.
Most Allen organs have divisional MIDI couplers (stops) that when engaged allow
transmission of MIDI messages from that particular division’s manual. Each organ division
transmits MIDI information on a different MIDI channel. THE MIDI COUPLERS THAT
CORRESPOND TO THE MDS-EXPANDER™ II DIVISIONS MUST BE TURNED ON
FOR THE ORGAN TO PLAY THE MDS-EXPANDER™ II’s VOICES. Standard MIDI
channel settings for the MDS-Expander™ II are as follows: SW = 1, GT = 2, PD = 3, CH =
4. To change these MIDI settings, consult the "MIDI FUNCTIONS" section of this manual.
To change the organ’s MIDI settings, consult the “RESETTING THE MIDI BASE
CHANNEL” section of the organ owner's manual or “Console Controller™ and MIDI
Guide”.
