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Hi, I have purchased a yamaha p35 and I am trying to use my korg ds1-h sustain pedal, but it doesn´t work.

The included plastic pedal works ok, but it has a mono plug, and the korg has stereo plug (I think it would be because of the half damper, which I seldom use). I tryed to plug it halfway, inverting polarity at the keyboard but no luck

Do you know if this damper can be used or would I have to purchase another?

Purchase another. Yamaha and Korg pedals operate backwards relative to each other (normal open vs. normal closed). Some third party pedals have "polarity" switches that allow them to work either way. This is not the same as what you are doing by putting the stereo jack in part way. You are correct that stereo jack design is needed for partial pedaling on boards that support it, but that's a different issue compared to whether the pedal is internally making its connection on press or on release. Both Yamaha and Korg designs use mono jacks except for partial pedaling, but what's happening inside the pedal is reversed. Roland uses the same approach as Yamaha, everyone else uses the same approach as Korg.

ThNks for the answer.
Just to learn, wouldnt a polarity issue would make the piano always sustain when the korg is connected? And that would be fixed changing the polarity at the piano?

It seems odd that the pedal does nothing...when I reversed the polarity at the piano and hooked e included yamaha footswitch it worked backwards

Right... with the "wrong" pedal, a keyboard will sustain when the pedal is not depressed, and stop sustaining when you press the pedal.


Most pianos/keyboards do not have an option to change the polarity of the pedal. There are some that do (via a manue option), and of course, then they can use either kind of pedal.


True, the wrong pedal should not "do nothing." Rather, it should operate in reverse, as discussed. Unless the pedal is defective.


The P35 does not include an option to reverse the pedal polarity. You mean when you plugged it in part way, it worked backwards?