There are two level settings for each Performance Part in the JV-1000; Part Level and Internal Level. The Part Levels represent the actual MIDI volume levels received from the sequencer. Internal Levels set the maximum volume for each of the Parts. When you bulk dump your Performance settings, the Internal
Levels are saved and the Part Levels always reset to 127. This allows you to balance your sounds using the Internal Levels, but still have a full range of volume expression (0-127). For example, if your Internal Level is set to 50 and you send a Controller 7 value 127 message, the Part Level will indicate 127 and the sound will play at level 50. Use the following procedure to view each of the level displays:
- Press PERFORMANCE.
- Press LEVEL on the Edit Palette.
- The display will indicate the Part Level.
- Press CURSOR UP.
- The display will indicate the Internal Level.
Owner's Manual: https://www.roland.com/us/support/manual_archive/