Modulation Parameters; Divisions; Tempo And Rate Knob Mode; Lfo Shapes - Electro-Harmonix MOD REX Manual

7

Modulation Parameters

Each of the four modulation sections has its own set of parameters, neatly grouped into
sections. The Tempo setting affects all four sections. While the four sections share one
bank of yellow LFO shape LEDs, each section can independently be assigned one of the
four shape options.

DIVISIONS

Each modulation section has a DIVISION knob to set its tempo division, and to
activate/deactivate the section in general (a division of 0 has the section inactive).
Divisions are explained in depth in the DIVISIONS DISPLAY MODE section on page 5.

TEMPO AND RATE KNOB MODE

The master tempo can be set manually by rotating the TEMPO knob in either direction.
It can also be set via tap tempo or an external device. These situations are good for
creating precise rhythmic based effects. If you want to use the Mod Rex as a more
traditional modulation pedal (less concerned with the exact modulation rate in BPM),
you can switch the TEMPO knob into Rate Knob Mode. In Rate Knob Mode, the tempo
increases/decreases much more quickly as you turn the knob in either direction. You
have less precise control over the tempo but the feel of the knob much more closely
resembles a traditional rate knob.
To switch into Rate Knob Mode, hold down the TEMPO knob until the yellow TEMPO
LED to the left of the display starts to blink. Release the TEMPO knob and you are now
in Rate Knob Mode. Hold the TEMPO knob again until the yellow LED is solid to go back
to normal mode.

LFO SHAPES

All four modulation sections share one bank of four yellow LFO shape LEDs underneath
the display. To see the current LFO shape of a specific section, hold down that section's
SHAPE button. One of those four yellow LEDs will light. To change a specific section's
LFO shape, while holding down that section's SHAPE button, toggle the SELECT button
by the bank of yellow LEDs. The four LFO shape options are:
RISING SAWTOOTH: With this shape, over one modulation cycle (based on that section's
division) a modulation will slowly rise from its minimum point to its maximum point and
immediately reset to its minimum point upon the next modulation cycle. This setting is
good for creating effects similar to a side-chaining effect or a reverse effect.
TRIANGLE: This is the most traditional LFO shape. In this setting over one modulation
cycle the modulation smoothly moves back and forth between its minimum and
maximum point.