User Manual

Prophet X User’s Guide

Filter

The Filter takes the basic, raw sound of the samples and digital oscil-

lators and subtracts frequencies, changing their harmonic content and

the character of their sound. This change can be varied over time using

the Filter Envelope to produce more dynamic, animated timbres. The

Prophet X’s lter is a classic, 4-pole, resonant low-pass lter that can self-

oscillate (generate a sine wave) when resonance is set to its maximum.

In addition, when used in 8-voice mode, the Prophet X lter has a stereo

signal path. This results in a noticeable increase in richness and depth.

This also gives you the ability to pan instruments 1 and 2 and/or oscil-

lators 1 and 2 to different positions in the stereo eld. (See “TAB 2 -

Panning” on page 29.)

In addition to the low-pass lter, there is a resonant high-pass lter available

in the effects section. If you want to sweep this lter using an envelope as you would

typically do on the low-pass lter, use the Modulation Matrix to route the Filter Enve-

lope or one of the Auxiliary Envelopes to it. Each sample instrument also has its own

Tone control which provides low-pass and high-pass ltering (without resonance).

The Prophet X Filter

To hear the effect of the lter:

1. Press the global button and use Soft Knob 1 to navigate to the basic

program command, then press Soft Key 1 (write now).

2. Hold down a note and rotate the lter’s cutoff knob. Notice how it cuts

the high frequencies as you rotate counter-clockwise, making the sound

of the oscillator less bright. If you turn the cutoff knob fully counter-

clockwise you’ll lter out all frequencies and hear nothing.