10.6

76Logic Pro Effects
• Type pop-up menu: Choose the type of distortion.
• Growl: Emulates a two-stage tube amplifier similar to the type found in a Leslie 122
speaker cabinet, which is often used with the Hammond B3 organ.
• Bity: Emulates the sound of a bluesy (overdriven) guitar amp.
• Nasty: Produces hard distortion, suitable for creating very aggressive sounds.
• Class AB soft: Emulates a softer crossover distortion encountered in transistorized
amplifiers when driving a higher load.
• Class AB hard: Emulates a harder crossover distortion encountered in transistorized
amplifiers when driving a higher load.
Crossover, in this case, refers to a switching between two matched transistors. In
Class AB designs, both transistors remain on at all times, reducing the effect of
hard switching between them.
Logic Pro Overdrive
Overdrive emulates the distortion produced by a field effect transistor (FET), commonly
used in solid-state musical instrument amplifiers and hardware effects devices. When
saturated, FETs generate a warmer-sounding distortion than bipolar transistors, such
as those emulated by the Logic Pro Distortion effect.
Overdrive parameters
• Drive knob and field: Set the saturation amount for the simulated FET transistor.
• Tone knob and field: Set the frequency of the high cut filter. Filtering the harmonically
rich distorted signal produces a softer tone.
• Output knob and field: Set the output level.
• Level Compensation button: Turn on to reference the overall processing of the signal to
0 dB. This compensates for increases in loudness caused by using overdrive.
• Display: Shows the impact of parameters on the signal.