Some expansion packs change the MIDI mapping of drum pads

Can someone please help me understand what's happening here? Please excuse me if I'm not using the most appropriate language to describe everything, as I'm still an MPC novice in most respects.

I'm using an MPC Touch primarily, but also use a Novation Launchpad X and an Mpk Mini Plus in some situations.

There are certain expansion packs that, when loaded, frustrate the ability of the LPX and the Mpk MP to activate MPC's virtual pads with the corresponding pads on those devices.

I recently discovered the MIDI Monitor though, and identified the problem, if not the reason why it's happening.

When no expansion programs are loaded onto the pads, or if a non-offending expansion program is loaded, the A1 pads on all three devices show up in the MIDI Monitor as a C1 note (Channel 1 for the LPX and Touch, Channel 2 for the Mpk MP).

If I load one of the problematic programs (for example, Hiphop-Kit-DP 600 Degrees Kit from the Dark Parallax expansion) though, and hit the virtual A1 pad, the MIDI Monitor now displays it as C#1, while C1 is now on pad A2 instead. The rest of them are all jumbled up as well. So in that scenario, when I hit A1 on the LPX or Mpk Plus, it's going to activate virtual pad A2 in MPC.

Oddly, none of this effects the Touch. The pads on the Touch always correspond, despite the MIDI signal of the virtual pads having changed.

I can work around it by loading a problematic program, and then just recreating that program in a separate program, manually mapping all of samples and colors. It can be time-consuming though, especially if I'm working with or trying out multiple kits in a project, so I'm hoping someone can help me understand why this is happening and/or if there is a way of preventing it from happening.

Any help would be appreciated.

Older kits use a different underlying midi mapping based on the original legacy mpc, 37, 36, 42, 82 etc. akai eventually realised this was daft and changed the default to chromatic c1.

Your controllers are hard wired to chromatic c1, but the touch is able to adapt the mapping while retaining the original sample layout

The solution for those older kits is to load it, go to edit, program, note mapping and select chromatic c1. Re save the kit.

MPC-Tutor wrote:Older kits use a different underlying midi mapping based on the original legacy mpc, 37, 36, 42, 82 etc. akai eventually realised this was daft and changed the default to chromatic c1.

Your controllers are hard wired to chromatic c1, but the touch is able to adapt the mapping while retaining the original sample layout

The solution for those older kits is to load it, go to edit, program, note mapping and select chromatic c1. Re save the kit.

Please excuse my delayed reply, I got hit like a truck with a flu or covid or something and haven't been on the PC until earlier today.

Thank you so much for that info, I'm definitely going to try to put it into play once I get my wheels spinning tonight. That should save me a good deal of time over recreating each one of those kits on a separate program. Thanks very much!