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PROKEYS 88SX
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M-Audio PROKEYS 88SX [4/20] Velocity curve

1.4 Velocity Curve

The ProKeys 88sx has four different velocity curve settings. The velocity curves deﬁne the response of the keyboard to how hard or soft you strike a

key. You should experiment with each to ﬁnd which curve best suits your playing style. To cycle through the various velocity curves, keep pressing

the Velocity Curve button.

One of the four curves gives a ﬁxed velocity of 100 regardless of how hard or soft you strike a key. When this curve is selected, the velocity curve is

effectively OFF. The LED above the Velocity Curve button will turn off to reﬂect this.

1.5 Volume Slider

The Volume slider will control the output level of your ProKeys 88sx.

1.6 Sustain Pedal

If you connect a foot switch pedal to the Sustain Pedal socket, you will be able to control the decay of the sound just like a sustain pedal does on a

real piano. A sustain pedal affects all notes played while the pedal is being held down.

1.7 Sostenuto Pedal

If you connect a foot switch pedal to the Sostenuto Pedal socket, this pedal performs the same function as on a real piano. The sostenuto pedal

affects only those notes held down at the time the pedal is depressed.

1.8 Expression pedal

A continuous controller-type pedal can be connected to the Expression Pedal socket. This pedal can be used to control the volume level of the

ProKeys 88sx. Controlling the volume with your foot allows you to keep both hands on the keyboard at all times.

1.9 Pitch Bend Wheel

The Pitch Bend wheel allows you to bend the pitch of your instrument. The Pitch Bend will raise or lower the pitch of your instrument by two semi-

tones. For example, if you play a C and push the Pitch Bend wheel all the way forward, the note you hear will be D. If you pull it all the way back

towards you, you will hear Bb.

1.10 Modulation Wheel

Some of the instruments have Tremolo and Vibrato effects associated with them. The Modulation wheel will control the depth of these effects. So, if

you set the wheel at the bottom, the Tremolo/Vibrato effect will be off. If you then move the modulation wheel upwards, the Tremolo/Vibrato effect

will become more and more prominent.

The following table deﬁnes the effect that the Modulation wheel controls for each of the seven instruments:

Instrument Effect

Piano 1 None

Piano 2 None

E. Piano 1 Tremolo

E. Piano 2 Tremolo

Clav None

FM Piano Tremolo

Perc. Organ Vibrato

1.11 Digital Effects

There are two digital effect buttons – Reverb and Chorus. Reverb will add ambience, as if you are playing your instrument in a large hall or church.

Reverb can be used to add warmth to the sound of your instrument.

Chorus is an effect that sounds much like two of the same instruments being layered together and slightly detuned one from the other. It can be

used to fatten up the sound of your instrument. In some cases, Chorus can make your instrument sound like a different instrument altogether. For

example, adding a lot of Chorus to Piano 1 or Piano 2 will add a “honky-tonk” effect to the piano sound.

Each of the digital effects has four levels of depth – Reverb (off, small, medium and large) and Chorus (off, narrow, medium and wide). Pressing the

Reverb or Chorus button repeatedly will select the depth of the corresponding effect. The depths increase in ascending order.

When the effect is set to off, the LED above the relevant button remains off. Pressing the effect button will then turn the effect on, with a small depth.

Pressing the button again will increase the depth from a “small” or “narrow” amount, to a “medium” amount, and pressing it again will increase the

depth further. The LED will remain on. Finally, pressing the button a third time will set the effect back to off and switch off the LED.

Part 1: ProKeys 88sx as a Digital Piano

M-Audio PROKEYS 88SX [4/20] Velocity curve

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