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SECTION FOUR - Effects Definitions
Compressor/Limiter - A compressor is used to constrain the dynamics of an instrument. In other words,
it sets a boundary for the volume the instrument will be able to reach. Compressing the dynamics of an instrument
tends to provide a smooth, balanced output level of the instrument. Limiting uses the same principle as
compression but is much more restrictive. When the compressor/limiter is selected, the display will show the
status as one of the following: CO indicating the Compressor is active, Lt indicating the Limiter is active, or --
indicating bypass. The Compressor has 4 different parameters which can be accessed with the Parameters button
once the compressor is selected and active. They are as follows: Crossover Frequency, Threshold, Ratio, and Gain.
The Limiter has one parameter: Threshold. See page 23 for parameter definitions.
Wah and AutoWah - Wah is a classic effect which provides a sweepable filter giving the instrument a
vocal type sound. The regular Wah is controlled by the Expression Pedal. AutoWah is a Wah effect which is
automatically controlled based on how hard you play. The Bass30 includes 3 types of Wah (1 - Classic Wah, 2 -
Treble Wah, 3 - Bass Wah), and 6 types of AutoWah (u1 - u3 - upward sweeping AutoWah with a progressing
degree of signal strength required to trigger the AutoWah, d1 - d3 - downward sweeping AutoWah with a
progressing degree of signal strength required to trigger the AutoWah).
Modeling - Modeling is a new technology which emulates the sounds and frequency response of different
types of amplifiers and guitars. The modeling section in the Bass30 offers 2 bass distortions: Overdrive, and Fuzz,
3 great bass amps: Classic (based on an Ampeg SVT); Modern (based on a Trace Elliot); and Rock (based on an
SWR), 5 variations of a fretless bass, and 12 variations on a synth bass. Each Amp Model as well as the distortions
contain 7 adjustable parameters: Gain (the amount of distortion), High EQ (treble), High-Mid EQ (upper end of
the mid range tone), Low-Mid EQ (lower end of the mid range tone), Low EQ (bass), Gate Threshold (see noise
gate definition), and Volume (Preset level).
Ampeg, Trace Elliot, and SWR are trademarks of their respective companies and are in no way associated with DOD Electronics.
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