Acoustic Mode to get the best working conditions where
an electro -acoustic guitar is the signal source.
3.6 Wah
Turns Auto Wah ON/OFF. This has four Parameter
controls, Level, Depth, Location and Glide Direction (see
2.3.9). The operation is triggered from the guitar signal
level. For the effect to operate correctly Level must be
adjusted for the desired effect.
3.7 Anti-Fb
When ON Anti-Feedback places in the signal path
two notch filters that can be used to reduce the possibility
of acoustic feedback. These notch filters can be swept
over a wide range. The frequency at which they operate
can be set from the Parameter controls Notch 1 and
Notch 2 (see 2.3.3).
3.8 Reverb
Turns Reverb ON/OFF. See Reverb 3.15
3.9 Bright
Bright applies a boost to upper mid frequencies.
3.10 Effect
Turns Effect ON/OFF. See Effect 3.16
3.11 Cab
Applies to the Line Output frequency response
shaping that rolls off the extreme bass and treble
simulating the natural response of a guitar amplifier
cabinet and loudspeaker drive unit.
3.12 Lock
The Lock button controls a memory system for storing
and recalling the positions of the Drive, Bass, Mid,
Treble, Presence and Reverb rotary controls for each
Channel. To store the locations of these controls, press
the Lock button and hold it down until the Lock LED
flashes. To recall stored locations press the Lock button
in the normal way (briefly). The Lock LED will be
illuminated. The Drive, Bass, Mid, Treble, Presence and
Reverb rotary controls will no longer have any effect, but
their position relative to the stored value is temporarily
displayed on the Channel LEDs. When the control is in
the same position as the stored location the central four
Channel LEDs will be illuminated. This pattern of LEDs
will move left or right as the control is moved either side
of the stored value.
3.12.01 Lock Edit
If it is required to adjust the position of an individual
Locked control this can be done by enabling the Lock
Edit mode. The Lock Edit mode can only be entered
when Lock is ON. With Lock ON, hold down the TAP
button then press and release the Lock button. The Lock
Led will commence flashing, indicating that the Lock Edit
mode is in operation. Moving any of the rotary controls
while the Lock LED is flashing will over ride the stored
value. Frequency Parameters for Mid and Presence can
also be adjusted (see 2.3.2). Press the Lock button again
when all the changes are made, the new values will be
stored and the Lock condition will be resumed.
3.13 Tuner
Turns on the built-in guitar tuner. All normal LED
display functions are suspended. Pressing any button
other than TAP will return the amplifier to normal
operation. As each string is played the string number is
displayed using the top six parameter LEDs. The top
most LED corresponding with top E. The deviation from
correct tuning is displayed using the Channel LEDs.
Correct tuning is indicated by all six LEDs being
illuminated. This pattern moves left and right as the
string pitch is below or above the correct pitch. The end
LEDs remain permanently illuminated. To get the fastest
and most consistent response to the string pitch it is
helpful to make sure that the five strings not being tuned
are damped.
The factory preset value for A is 440 Hz, but this can
be changed from 440 to 448 Hz. To do so, engage the
Tuner operation. Hold down the TAP button, the value
for A will be shown on the Parameter LEDs, top to
bottom indicates 440 to 448 Hz (9-1). The value for A
can be altered using the lower rotary.
The Tuner function also provides a convenient way
of quickly Muting all the audio outputs.
3.14 Amplifier (Select)
Selects the style of Amplification. The Jazz and
Acoustic settings are clean. The Acoustic frequency
response is overall flat and includes frequency
compensation for the drive unit to give the best response
for an electro-acoustic instrument.
The Country, Blues and Rock settings have the
option, using the Drive control, to add varying levels of
distortion. Jazz, Blues and Rock have a similar
frequency response providing a bright punchy tone. The
Country setting has mid frequency scoop and lighter
distortion to provide a clear, singing tone.
Where a jazz guitarist would like slight distortion, to
add colour and limit the dynamic range, the Country,
Blues and Rock settings can be used with the drive
control kept toward its minimum.
3.15 Reverb (Select Type)
Selects the type of Reverb or Delay. When the
Reverb is OFF there are no LEDs illuminated. If the
Reverb is OFF pressing the Reverb button will turn the
Reverb ON without changing the selected Reverb type.
When the Reverb is ON pressing the Reverb button will
select the next reverb type.
Spring, Plate and Hall provide a short delay followed
by high quality stereo reverberation system with the two
outputs going to the internal power amplifier and line
output. The delay and reverb time can be set from the
Parameter controls (see 2.3.3).
The Spring setting provides a good general purpose
reverb similar to a traditional mechanical unit. The range
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