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Pitch-bend wheel out of range in MPK249

I use Ableton Live 9 Lite as a DAW and have a problem with the pitch-bend wheel on my MPK249. The range of the pitch-bend wheel seems to be asymmetric. This problem occurs irrespective of the VST plugin that I use.

Suppose that I set the pitch-bend range in my VST plugin to "12," which means that any sound should be pitched up or down by +1 or -1 octave when I push the wheel in its top or bottom position, respectively. Well, this works fine downside but not UPSIDE! For example, if I play C4 and move the wheel to the bottom, I get a C3, but if I move the wheel to its top position I get a B4 but not a C5.

Does anybody have the same problem or an idea...?

P.S.: I just checked the MIDI signals of the wheel. Here are the hexadecimal (and decimal) values:
- bottom: 00 (decimal: 00)
- middle: 40 (decimal: 64)
- top: 7D (decimal: 125)

In my opinion, the last value should be 7F (decimal: 127) instead. Is this a hardware issue? What do you think...?
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  • Hi Gabriel,

    Thanks for posting!

    You are correct that it should go up to 7F/127. Do you have any issues with this at a lower range?

    I would try excersing the pitch wheel a bit by moving it from one end to the next repeatedly, and/or using some compressed air to blow out any dust particles or dirt. Over time, dust and dirt may tend to build up at the ends of the contacts.

    If you continue to have trouble, I'd recommend contacting our Tech Support to look into this further. Here are a couple of options that you could choose from:

    • Submit a Warranty or Service inquiry with our Technical Support team by logging onto the Akai Pro Support Page. Select Warranty or Service Inquiry from the drop down menu.

    or

    • For quicker support, call your nearest Support Office or International Distributor.

    Make sure to reference or link this thread to help out the support team.

    I hope this helps! Let me know if you have any additional questions.
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  • Dear Corey,

    Thanks a lot for your reply. I have no issues at the lower range. Pushing the wheel down leads to a MIDI value of 0, whereas pushing it up leads to a MIDI value of only 124 or 125 (in decimal values).

    After reading your post, I tried it again and realized that the upper value essentially depends on how firm I press the wheel to the top. Now, if I press it VERY hard to the top, indeed, I get a 127, which is the correct value! To be honnest, I was afraid to destroy the wheel by pressing it too hard. I bought the device just one week ago. For this reason, I do not believe that the problem comes from any dust particles or so. It seems to me that it is only a matter of calibration (regarding the underlying potentiometer). Anyway, it is not a software problem.

    Most importantly, the wheel works fine in the center. I guess usually I will not have to make use of the whole range of the wheel. However, if I will ever need the whole range, now I know what to do... ;-)

    Best wishes,
    Gabriel
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  • You can soften the problem by making a software adjustment on the keyboard itself. First you move the whell pitch by placing it in the position that should give 0. Then you push the button on the side of the display to create a new preset. With the keys under the button, you reach the setting limits, which if correct would range from 0 to 127. You then set them to values in a smaller range, for example, from 0 to 50. And saved The preset. This way, you can use the keyboard without major problems.
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