Source Audio soundblox 2 User Manual page 18

RESONATOR
The RESONATOR flangers, labeled RES 1 and RES 2,
RES 1 and RES 2:
both have four modulating signals. These highly resonant flangers create
a distinctly hollow sound with ringing overtones.
RESONATOR
RES 1
SHADOW
RES 2
THRU
ZERO VIBE
FLANGER
PHASER
CLASSIC 4 STAGE
CHORUS
QUAD 6 STAGE
DUAL 8 STAGE
12 STAGE
PHASER
The classic phaser is similar to a flanger, both require two identical
signals running in parallel, but while the flanger's modulating frequency
peaks create the well-known "whoosh" sound, a phaser generates
modulating frequency notches, which create a subtle, undulating sound
similar to that found in a rotating Leslie speaker.
The VIBE effect type was modeled after the Shin-Ei Univibe, the
VIBE:
original rotating speaker simulator (i.e. the original phaser pedal). This
effect contains 2 relatively wide frequency notches spaced farther from
one another than a typical phaser.
18 | Effect Types