Atomic Ampli-Firebox - Advanced EQ and Filter Settings; Second-Order EQ Filters; Specialized Filter Types

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PARAMETER SETTINGS CONTINUED...
LOW SHELF 2 continued... This mode is similar to LOW SHELF 1, but has a sharper
transition from lows to highs and it is affected by the Q control. The Q control
smoother transition affects peaking just around the transition between lows and
highs. Increase the Q to increase the peak that occurs at the transition. Reduce the
Q to flatten the peaks for a smoother transition.
HIGH SHELF 2: Applies a second-order high shelf filter which changes the level
of the treble (highs) and leaves bass (lows) unaffected. This filter boosts (or cuts)
high frequencies above the value set in the FREQUENCY parameter by the amount
set with the LEVEL parameter. It leaves low frequencies below the FREQUENCY
parameter unaffected. This mode is similar to HIGH SHELF 1, but has a sharper
transition from highs to lows and it is affected by the Q control. The Q control
affects peaking just around the transition between highs and lows. Increase the Q
to increase the peak that occurs at the transition. Reduce the Q to flatten the peaks
for a smoother transition.
BANDPASS: Applies a bandpass filter which allows only frequencies in a narrow
band to pass and cuts all other frequencies outside this band. The center frequency
of the band is determined by the FREQUENCY parameter and its level is controlled
by the LEVEL parameter. The width of the band (amount of frequencies near the
center frequency) is determined by the Q control. Increase the Q control for a
NARROWER band, decrease the Q control for a WIDER band.
NOTCH: Applies a notch filter which cuts frequencies within a narrow band and
lets all other frequencies outside this band pass at the level set by the LEVEL
parameter. The center frequency of the band is determined by the FREQUENCY.
The width of the band (amount of frequencies near the center frequency) is
determined by the Q control. Increase the Q control for a NARROWER band,
decrease the Q control for a WIDER band.
PEAKING: Applies a peaking filter which boosts or cuts the level of frequencies
within a narrow band and leaves all other frequencies outside this band unaffected
The level of the peak is set by the LEVEL parameter The center frequency of the
peak is determined by the FREQUENCY parameter The width of the peak (amount
of frequencies near the center frequency) is determined by the Q control Increase
the Q control for a NARROWER peak, decrease the Q control for a WIDER peak
LEVEL: Adjusts the output LEVEL (in dB) of the filter, typically the level of the pass
band of frequencies for the filter (see filter types above for more detail).
FREQUENCY: Adjusts the corner frequency of the filter This can be either the
cutoff, transition, or center frequency depending on the type of filter (see filter
types above for more detail).
Q: Adjusts the Q of the filter which controls the amount of peaking This parameter
has no effect on GAIN ONLY and first order filters (which do not have a Q control)
Increase the Q for sharper peaks / narrower bands Decrease the Q for smoother
transitions / wider bands.
LOW-CUT: Adjusts the roll off frequency of a special low-cut filter, designed to
allow customizing your tone by feeding less lows into the front end input of the
guitar amp model This parameter can be used to “mod” the amp models for a
tighter and punchier tone.