Support and discussion for all of Akai’s modern standalone MPCs including the MPC X / X SE, MPC Live 1, 2 & 3, MPC One / One+, MPC Key 37/61.
By Gnasher Sat Feb 15, 2025 5:35 pm
Hi, so to start off, I'm new to the MPC but have a background in MIDI, modular and such. One of the things I was wanting to try out today was CC control the volume of a track.

I set the MPC to learn and it picked up immediately which CC controller I was turning and on which channel.
However, soon after it went haywire; after a small while the slider on the MPC started a life of it's own in an increasingly extreme way. Trying to relearn and setting the CC to panning resulted into the MPC crashing.

I decided to monitor the MIDI controller through MIDI ox but it was functioning fine. I though it might had to do with the active sensing, but I have learnt there's no active sensing filter on the MPC and it shouldn't be an issue.

So I restarted the MPC and tried to do it again. But instead of controlling the volume the CC controller functioned as a note on despite all the preferences being to volume.

I restarted for a third or fourth time, and this time I got it to function as a volume knob again, however there was no longer any feedback of the slider moving on the MPC screen.
> NB: I think the above mentioned issue was due to having selected the wrong page in the channel strip.

Can it be a consequence of static electricity? > I've seen the Q-Link controller go wild at one point as well.
Firmware issue? > I'm using 2.15.1 as I couldn't use V3 without WIFI issues, so I downgraded. I though it perhaps might be a known issue with version 2.#.
Anything other? :roll:
Last edited by Gnasher on Sat Feb 15, 2025 7:21 pm, edited 3 times in total.
By Gnasher Sat Feb 15, 2025 7:03 pm
DellAtreides wrote:Out of interest, what is the controller and how is it connected? If USB, is it via a hub connecting several other midi devices?


Good questions: a UC-16, no hub, but directly into the MPC.
By DellAtreides Sat Feb 15, 2025 8:05 pm
Does it do the same thing if you connect the UC16 with a 5pin midi cable instead? You'll need to use a mains plug to power the uc16 when connecting only a midi cable, and you'll need to turn off Midi Out From USB.

And/or

Have you tried a different USB cable?
By Gnasher Sat Feb 15, 2025 8:56 pm
Okay, it has been working correctly for a while now. Grounding issue with the MPC. Somehow the MIDI controller, after being programmed for a function, invokes this issue. Even after having the USB cable disconnected it continues. Interesting.

Thanks DellAtreides for your input, well appreciated.