13. THRESHOLD (-90 dB to
–20 dB): The approximate signal level at
which the DECIMATOR will begin downward expansion of the input
signal, effectively turning off the noise. Higher threshold values are
needed to deal with higher levels of noise. Since the detector for
the DECIMATOR is at the very input of the digital signal processing
chain, this threshold does not usually have to be re-adjusted
because of changes in the preamp settings, but using very high
values of gain may make the residual noise more apparent, so you
will want to set this to a higher value on those presets.
D) INTELLIGENT SPEAKER
™ (INTELLIGENT SPKR™) Function
1. INTELLIGENT SPKR
™ (OFF or ON): This turns on the speaker
filter function. It achieves virtually identical sound to a microphone
on a speaker cabinet, since it convolves the signal with actual
samples of a microphone on a speaker cabinet. This function
always affects the signal output on the Direct and Headphone
outputs, but will also affect the Stage Outputs if the Global
parameter ‘STAGE SPKR SIM’ is set to ON. This parameter is
useful if using the Stage Outputs to drive a full-range speaker such
as a vocal wedge or even in-ear monitors, and use the STAGE
OUT LEVEL control to vary the level independently from the
DIRECT OUT signal, which typically feeds the front of house
system in a live situation, or mixer/DAW inputs in a recording
situation.
2. Type (4x12 Greenback, 1x12 Creamback, 1x12 Deluxe, 4x10 59 B-
man, 2x12 Twin, or Lowpass Filter): Of these, only the Lowpass
Filter is not based on measurement of an actual speaker, but is
simply a fourth order lowpass filter approximation to a guitar
speaker. Some may like its sound for certain uses, but it serves as
a comparison to the sound of less advanced speaker simulations.
3. REACTANCE (-6 to +6): Bass boost or cut level. This simulates
the bump in the bass that can occur with a tube amp interacting
with the LF impedance bump (the reactance) in a speaker. It
allows you to adjust the bass further to your liking.
4. MIC POSITION (-6 to +6): This simulates moving the microphone
from the edge of the cone to the center of the cone by appling a
high frequency shelf EQ.
E) WAH Function
1. WAH (OFF or ON): Turns the WAH on or off. There are four ways
the WAH can be turned on or off. One is by accessing this
parameter and turning the VALUE knob. The second is by pressing
the 2
nd
switch (if it is not already on), then pressing the
BOOST/WAH switch. The third is to connect an expression pedal
with a switch to the EXP. SWITCH jack on the rear panel with a