Alesis RoadFire 15 Quick Start Owner's Manual page 9

NR (Noise Reduction)
This is a combination of two effects—hum elimination and noise reduction. Hum elimination works by
cutting out the frequency that contains the hum (60Hz). Noise reduction works by gating the signal
(muting the signal until its level rises above a certain point).
Hum Elimination (Left digit of display)
Increasing levels of hum elimination (60Hz harmonic notch filters).
Turns off hum elimination.
Noise Reduction (Right digit of display)
Increasing levels of gate threshold.
Turns off noise reduction.
CAB (Cabinet Simulator)
This module allows your Roadfire to emulate cabinet setups of various sizes.
A single 12" driver cabinet.
A 2 x 12" driver cabinet.
A 4 x 10" driver cabinet.
Off
Turns off CAB.
FX1 (Multi-Effect Module 1, Mono to Stereo Effects)
This module gives you a choice of mono effects. You may assign one effect at a time to this module.
Auto Wah
A wah sound controlled by playing intensity. Attack the strings aggressively for more
effect. Higher values indicate higher input sensitivity.
Pedal-Controlled Wah
A wah sound controlled by moving the optional expression pedal up and down as you
play.
Phaser
An effect that shifts the phase of the signal and adds it to the original sound (in
simpler terms, it adds a duplicate signal that is delayed a bit). The phaser gives your
guitar a full, pulsating sound. Higher values result in more feedback, producing a more
intense effect.
Pedal-Controlled Phaser
A phaser effect with its feedback controlled by the expression pedal.
Tremolo
Varies the volume of the signal, creating a rising and falling effect. Higher values result
in greater depth of variation.
Pedal-Controlled Tremolo
A tremolo effect with its depth controlled by the expression pedal.
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