M-Audio SP-2 - Sustaining While the Pedal is in the Up Position

In some cases when connecting a sustain pedal to a keyboard, the pedal may act as though it is reversed. The sound will sustain when the pedal is in the open position and will stop sustaining when the pedal is pressed. The M-Audio SP-2 professional piano style pedal ships with a polarity switch built directly into the bottom of the pedal for an easy and fast fix for these type of symptoms.

This article walks through the typical causes of a pedal sustaining when in the open position, as well as the easy fix for the M-Audio SP-2 and how to adjust the polarity for most other sustain pedals on the market today.