OCTAPAD SPD-30: Can I Use a Footswitch to Play a Kick Drum Sound?

No. A footswitch connected to the OCTAPAD SPD-30's EXTERNAL TRIGGER INPUT jacks cannot be used to play a kick drum sound.

To play a kick drum sound with your foot, connect a kick pad or kick trigger (e.g., KD-8, KD-7) to the EXTERNAL TRIGGER INPUT jack instead.