Hi Yinon,
1) As already mentioned by John, there is also a volume setting in "Voice Edit" (called "Voice Set" on earlier models). This parameter is set well below 127 for most Preset Voices, so that you can use it to increase the volume of the Voice concerned if the maximum possible Part volume in the mixer is not sufficient.
2) You can also work with the
Part EQ (either in the Mixer or in Voice Edit), i.e. increase the bass and/or treble of a Voice. In
Voice Edit you can also set the
center frequencies of the two Part EQ bands, e.g. to boost certain MID frequencies.
3) You could also use a suitable
Insertion Effect with which the output level can be adjusted. This can also be used to make a voice much louder, if needed.
However, I recommend not to set all offset volumes (in the mixer) very high. In the worst case, internal digital distortion could occur if all the Voices used are mixed very loudly internally. (I recommend checking the current overall volume in the Master Compressor display from time to time.)
For example, I myself work with a volume of 70 for MIDI songs and 90-100 for Styles. For the Right Voices, the range of 90 - 127 is sufficient in most cases. If I need more "power" for a Keyboard voice, I use the mentioned methods 1, 2 and/or 3 as required.
By the way: The setting of the "Initial Touch" curve ("Menu > Keyboard/Joystick > Keyboard > Initial Touch") also has a great influence on the "playability" of Super Articulation Voices, if you have a relatively light touch and maybe one of the touch curves "Soft 1" or "Soft 2" have been set: Please also try the "Easy 1" and "Easy 2" settings, I find them easier to control than the "Soft" settings.
Best regards,
Chris