Using controllers to modify the sound
You can operate the X50's [MOD] wheel, [PITCH] wheel, [SW1][SW2], and realtime controllers
to add expressive variation to your performances.
[PITCH] wheel, [MOD] wheel
You can use the [PITCH] wheel and [MOD] wheel located at the upper left of the keyboard to
vary the pitch or adjust the depth of modulation. The actual result will depend on the program
and combination, but these controllers are normally used to apply the following effects.
Raise the pitch
Lower the pitch
REALTIME CONTROLS , , , , [SELECT]
Use the [SELECT] button to select realtime controller mode A/B/C, and use knobs – to
control the tone, effects, MIDI control changes, and arpeggiator etc. while you perform. Use
these knobs when you want to modify the sound while performing, or to make simple edits.
Here we'll explain how to use the realtime controllers in Program mode.
1. Press the [PROG] button. (The button will light.)
2. Choose "Program Select" (program number and name), and turn the [VALUE] dial to select
the program that you want to control using the realtime controllers.
3. Press the REALTIME CONTROLS [SELECT] button to light the "A" LED located at the right
of the button.
4. Turn knob  (LPF CUTOFF) to adjust the cutoff frequency of the low pass ﬁlter.
When you adjust the cutoff frequency of the ﬁlter, the brightness of the sound will change.
The effect will depend on the settings of the program parameters, but normally, rotating the
knob toward the left will darken the sound, and rotating it toward the right will brighten it.
5. Turn knob  (RESONANCE/HPF) to adjust the resonance level of a low pass ﬁlter or the
cutoff frequency of a high pass ﬁlter.
The content that is controlled will depend on the ﬁlter type speciﬁed by the program.
By adjusting the ﬁlter resonance level, you can increase or decrease the resonance level to add
a unique character to the sound.
Adjusting the cutoff frequency of the high-pass ﬁlter will modify the thickness of the sound
from which the low frequency range has been ﬁltered out.
Playing programs and combinations