Roland SPD-20 Owner's Manual page 84

When playing external MIDI sound modules
• No sound
Are MIDI connections correct?
Check that the SPD-20 MIDI OUT is connected to the MIDI IN of the external sound module, and
that the MIDI cable is not damaged.
Is the volume of the MIDI sound module turned down?
Raise the volume.
Is TX CH (Transmit Channel) in the MIDI parameter group set correctly?
Make sure that the Transmit Channel is not set to "oFF" and that the MIDI channel of the pad
and the sound module match (p. 61). Additionally, if the Transmit Channel is set to P1–P16, S-S,
C-S, or toP, Note Messages are not transmitted.
Is NOTE # (Note Number) in the MIDI parameter group set correctly?
Check the note numbers of the MIDI sound module (p. 62).
Is CURVE (Velocity Curve) in the SOUND parameter group inappropriate?
Make appropriate settings for the Velocity Curve parameter (p. 64).
• The sound is too soft
Is GT TIME (Gate Time) set too low?
If you are playing a sound with a soft attack, set a longer Gate Time (p. 63).
Is CURVE in the MIDI parameter group set to an inappropriate value?
Set Velocity Curve to an appropriate value (p. 64).
Is SENS in the MIDI parameter group too low?
Set Velocity Seneitivity to an appropriate value (p. 64).
• The volume does not change in response to playing dynamics
Is CURVE in the MIDI parameter group set to "CSt"?
Set Velocity Curve to an appropriate value (p. 64).
• The note duration of the MIDI sound module does not change
even though you adjusted GT TIME
Does the MIDI sound module recognize Note Off messages? Or has it been set to a mode in
which it does not recognize Note Off messages?
Refer to the operation manual of the MIDI sound module.
• When you select a Patch, the sound of the MIDI sound module also changes
Has PGM CHG (Program Change) in the MIDI parameter group been set for a pad?
Set Program Change to "oFF" (p. 65).
• The MIDI sound module does not change sounds in response to
Program Change messages
Is PGM CHG in the MIDI parameter group set to "oFF"?
Make Program Change settings (p. 65).
Are the Transmit Channel of the pad and the MIDI channel of the MIDI sound module set appropriately?
Check the Transmit Channel of the pad and the MIDI channel of the MIDI sound module (p. 61).
Is the MIDI sound module able to respond to Program Change messages? Or is it set to a mode
in which it does not recognize Program Change messages?
Refer to the operation manual of the MIDI sound module.
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