The SPD-SX PRO is designed for use onstage in live performance. To prevent sounds from accidentally playing due to vibrations onstage, this unit is shipped with the Threshold value (the minimum sensitivity for the pads) for the TRIGGER IN jack set to a high value (default: 15). Adjust the Threshold value when you need to play more intricate parts.
Adjust the Threshold value when you need to play more intricate parts. For details, refer to "Configuring the Pads and the TRIGGER IN Jacks (PAD /TRIG IN)" in the SPD-SX PRO Reference Manual.