How is it possible? Am I demanding too much to the MOXF6, or am I doing something wrong?

Thanks for the question. What you are doing wrong is using the “Performance Creator” improperly. When you want to do deeper editing you should not use the Performance Creator.

The Performance Creator is a macro. Designed as a quick routine for creating a Layer, or Split and a quick way to add a drum Arp... on-the-fly.

A Layer = two Parts across all keys.
A Split = two Parts, one Upper, the other Lower. There can only be 1 Split Point, it defines Upper/Lower
The DrumAssign allows you to quickly assign a Kit with a drum groove Arp across the keyboard but under control of the Arpeggiator.

This can be done, literally, in seconds - even while on-stage because everything needed is readily accessible for quick access. As you are about to learn, you can certainly divide the keyboard in more advanced ways, but you are going to have to go to a deeper level of editing in order to create what you are attempting. In other words, you’ve graduated to a deeper level of programming.

Now I'd like to split the keyboard in the last upper octave, where I'd like to play a piano/bell like sound, while still using my layered sound in the first 4 octaves

What you want is to combine functions. The word “split” in the MOXF is defined by an upper and a lower Part. You will not be using the Performance Creator’s [LAYER] or [SPLIT] or even the [DRUM ASSIGN] buttons... what you are going to do is program your Performance “from scratch”.

Instead of using the Performance Creator, you’ll want to define Note regions using the “NOTE LIMIT Lo” and “NOTE LIMIT Hi” parameter settings found on the deeper level of editing... These allow you to set a range for each Part, as you require. This is NOT called “split” any longer, but rather is referred to as setting the “Note Limit” for the Part.

You can setup each Part, not just above or below a single “Split Point” but can define any region on the MIDI Keyboard for each Part.
If you set the High Limit lower than the Low Limit, you can create a “no fly zone” where notes outside of the dead zone sound. This is useful when you don’t want a region of notes to sound from a Part. Example: you want to use a Drum Arp, but not the congas and bongos, you can eliminate them by setting the Low Note Limit to F3, and the High Note Limit to B2... this means C3, C#3, D3, D#3, and E3 will not sound.

Extra Credit:
There are 128 Notes on the MIDI Keyboard, C-2 through G8 (10 and 1/2 octaves)
Yamaha uses the C3 = middle “C” convention
An 88 note piano would be A-1 through C7
A 76 note keyboard would be E0 through G6
A 61 note keyboard would be C1 through C6

To create a Performance from scratch:
Press [PERFORM] to enter Performance Mode
Press [JOB]
Select ”Init”
__ you are given options to initialize different items, select “All” > Press [ENTER] to execute and again to confirm

Press [EDIT]
Press [1] to view Part 1 Edit

With [F1] VOICE and [SF1]VOICE selected under the screen, you can place or search for the Voice you want in Part 1.
Using the [SF] buttons you can select [SF3] LIMIT to set the Note and Velocity Limits of Part 1.

Rinse and repeat... by going to [2] and selecting a Voice for Part 2 and use [SF3] LIMIT to set its range.
And so on for each of the four available Parts.

Extra Credit 2:
When entering Note Limit range you highlight the parameter, hold [SHIFT] and then touch the Key to enter its value.
Say you want to set the “NoteLimitHi” for Part 1 at B3, move the cursor to the parameter, hold [SHIFT] + the Key B3 — If you don’t know where B3 is just touch the Key while holding [SHIFT], it will identify itself.

The same is true for setting Velocity Limits, hold [SHIFT] and touch the Key at the velocity you wish to enter.
Hope that helps. Thanks for the question.

Hi,
thanks a lot for the explanation. At least I managed to split my keyboard, while using my layer. I found a tutorial on Youtube, thanks to I discovered the functions of the JOB button. With the JOB button you can set until what point a voice or layer can be played. I set C5 as starting for my piano bell sound, and B4 as ending point for my pad layer.
Very simple!

I graduated to a deeper level of programming! 😀