Roland VGA-7 Musical Instrument Amplifier User Manual


 
31
Panel Descriptions
WAH
This effect creates a unique tone by changing the frequency
response of a filter. By connecting a separately available
expression pedal (e.g., Roland EV-5 or BOSS FV-300L) you
can control the wah effect in real time.
* While using WAH, the expression pedal cannot be used to
control the volume.
fig.30
Pedal Knob [PEDAL]
This simulates the pedal position when the wah pedal is
operated.
Rotating the knob fully clockwise will advance the pedal all
the way. Rotating the knob fully counterclockwise will return
the pedal all the way.
Range: 099
SLOW GEAR
Slow Gear is an effect that fades-in each note (violin-style
playing) by detecting the picking of the guitar. It lowers the
volume of the attack of the input signal, and gradually raises
it.
fig.31
Sensitivity Knob [SENS]
This adjusts the sensitivity of the slow gear. When it is set to
a lower value, the effect of the slow gear can be obtained only
with stronger picking, while no effect is obtained with
weaker picking. When the value is set higher, the effect is
obtained even with weak picking.
Range: 099
Rise Time Knob [RISE TIME]
This adjusts the time needed for the volume to reach its
maximum from the moment you begin picking.
Range: 099
COMP (Compressor)
The compressor is an effect that attenuates loud input levels
and boosts soft input levels, thus evening out the volume to
create sustain without distortion.
fig.32
Attack Knob [ATTACK]
Adjusts the strength of the picking attack. Larger values will
result in a sharper attack, creating a more clearly defined
sound.
Range: 099
Sustain Knob [SUSTAIN]
Adjusts the range (time) over which low-level signals are
boosted. Larger values will result in longer sustain.
Range: 099
TREMOLO
Tremolo is an effect that cyclically modulates the volume.
fig.33
Rate Knob [RATE]
Adjust the speed at which the volume will change.
Range: 099
Intensity Knob [INTENSITY]
Adjust the depth of the effect.
Range: 099