The Effects
71
BRIGHT CAP - This control sets the value of the “bright cap” across the virtual drive control.
Increasing this will make the preamp brighter and vice-versa. The Bright Switch must be engaged
for the effect to be audible.
TONESTACK TYPE - This control allows you to select the type of tone stack used in the
simulation. The tone stack will default to either
ACTIVE
or
PASSIVE
depending upon the
DEFAULT
TONESTK
parameter in the GLOBAL menu. When set to
ACTIVE
, the tone stack is a semi-
parametric EQ with +/- 12 dB of range for each control. When set to
PASSIVE
, the tone stack is an
exact digital recreation of the classic tone stack used in the amplifier being simulated. You can also
choose from a wide selection of other tone stacks if desired. Fifteen classic passive tone stacks are
available to choose from. So you can dial up a Plexi model and change the tone stack to a Blackface
or Top Boost, etc. yielding hybrid amp sounds.
TONESTACK FREQ - This control allows you to alter the center frequency of the tone controls.
You can use this to change the character of the preamp. This parameter defaults to a value for each
type but can be overridden if desired. When using the passive tone stack this control also works.
However, if you change the tone stack type to anything other than the default, the frequency reading
will not necessarily be correct although the control will still alter the frequency.
TONE LOCATION - This control allows you to alter the location of the tone stack. “Pre” places the
tone stack at the input to the amp, “post” places the stack between the preamp and power amp.
“End” places the tone stack after the power amp (which is physically impossible with a real
amplifier). This parameter defaults to a value for each type but can be overridden if desired.
XFORMER LF - This control allows you to alter the lower cutoff frequency of the “output
transformer”. Increase this value to simulate an old, under-designed transformer as was common in
some vintage amps. This parameter defaults to a value for each type but can be overridden if
desired.
XFORMER HF - This control allows you to alter the upper cutoff frequency of the “output
transformer”. Decrease this value to simulate narrow bandwidth transformers as were common in
some vintage amps. This parameter defaults to a value for each type but can be overridden if
desired.
LF RESONANCE -
This controls the effective output impedance of the power amp simulation in the
bass region. Higher values increase the impedance which increases the interaction of the virtual
speaker with the power amp. Higher values give a fuller, looser sound, while low values can be used
to achieve a more focused sound.
HF RESONANCE -
This controls the effective output impedance of the power amp simulation in the
treble region. Higher values increase the impedance which increases the interaction of the virtual
speaker with the power amp. Higher values give a brighter, chimier sound.
PWR TUBE BIAS - Sets the bias point of the virtual power amp. Lower values approach pure
Class-B operation, higher values approach pure Class-A operation.
PRESENCE FREQ - This control allows you to alter the center frequency of the presence control.
This parameter defaults to a value for each type but can be overridden if desired.
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