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Using the SD-50 as a MIDI Sound Module
The SD-50’s sound generator has the following two modes. In Normal mode, you can select sounds from the SD-50
itself. For more about selecting sounds, refer to “Selecting a Tone For Each Part” (p. 46).

Normal mode

This is the normal state of the SD-50. You’ll be able to select and play sounds from three groups: PRESET, GM2, and
Solo.

GS mode

Use this mode when you play back GS performance data. GS mode is activated when the SD-50 receives a GS Reset
MIDI message (system exclusive message).

About the Sound Generator

Group Number of sounds Explanation
PRESET 640 sounds+14 drum sets This is the SD-50’s original set of sounds.
GM2 256 sounds +9 drum sets
These are sounds that comply with GM2, which standardizes MIDI sound
modules across manufacturers and models.
* You can choose the following two types of GM sounds. Specify the
desired GM type as described in “System Settings” (p. 72).
•Classical
This is the basic set of sounds that will blend easily into an ensemble.
You should also use this sound set if GM2 data compatibility is an
important consideration.
• Contemporary
This is a set of sounds that emphasizes the realism of each individual
instrument. This set is selected when the SD-50 is powered up.
Solo 3 sounds
These sounds realistically simulate the tonal characteristics of acoustic
instruments and the unique performance techniques used with a variety of
instruments.
For more about settings for Solo sounds and how to play them, refer to
“The Solo sounds and how to play them” (p. 106).
Group Number of sounds Explanation
GS 226 sounds +9 drum sets
This sound set complies with the “GS” sound generator format promoted by
Roland Corporation.
* If GS mode is selected, the following settings will be unavailable.
• “Selecting a Tone For Each Part” (p. 46)
• “Adjusting the Pan and Effect Depth” (p. 51)
• “Adjusting the Effect Settings” (p. 52)
• “Saving a Studio Set” (p. 54)
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