Source Audio soundblox 2 User Manual page 19

As a rule, every pair of phase shift stages
VARIABLE STAGE PHASERS:
creates one notch in the frequency response, so the 4, 6, 8, and 12 STAGE
PHASERS produce 2, 3, 4, and 6 frequency notches, respectfully. As you
progress from the 4 to the 12 STAGE PHASERS, the effect will sound
more complex and pronounced.
RESONATOR
RES 1
SHADOW
RES 2
THRU
ZERO VIBE
FLANGER
PHASER
CLASSIC 4 STAGE
CHORUS
QUAD 6 STAGE
DUAL 8 STAGE
12 STAGE
TREMOLO
Though TREMOLO is not one of the effects listed around the EFFECT
SELECTOR knob, turning up the Orbital Modulator's TREMOLO knob can
produce several traditional or non-traditional tremolo effects. For a basic
tremolo, set the MOD SOURCE to a standard sine wave, dial the EFFECT
SELECTOR to CLASSIC, turn the DEPTH and DELAY all the way down
and the MIX to 100% wet, then set the TREMOLO somewhere between 9
and 11 o'clock. For some more unique tremolo effects, try dialing in more
DEPTH and experiment with the different effect types.
Effect Types | 19