Roar Quad 15, Руководство пользователя

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9
5.2 O
VERDRIVE
C
HANNEL
With a more classic overdrive character, this channel is designed to cover a wide range of overdrive/distortion sounds.
From compressed cleans to classic overdriven blues or medium rock distortion and even metal sounds for rhythm work.
Three switchable gain range settings make it easy to adjust the desired amount of gain with the gain knob. Adding an
overdrive, EQ or booster pedal in the pre-gain loop leads to an endless amount of OD/DIST sounds. Three tube stages
for all range settings make the transition from clean to overdrive, smooth and compressive. This channel has its own EQ
section with Bass resonance, Freq, Mid and Treble, which is further described on page 12.
GAIN:
Preamp overdrive/distortion
Classic gain control that makes it easy to find the point where the preamp starts to break up.
Range:
3 way gain range switch
High:
Medium/hi-gain
Lower Gain settings provide smooth overdrive with great string definition for open chords and single
notes. Higher gain settings enter the classic rock / heavy metal domain like the classic amps from the
80's. With moderate low-cut before the gain stages, the bass response is defined, but not as chunky as
the “Rhythm” channel.
Low:
Brown Overdrive
Classic tube overdrive with less low-cut before the gain stages. Low gain overdrive sounds become more
wet as the gain is turned up with a more brown tone. Works well with trebly guitars that needs more
body. At low settings, a dark and dirty clean sound is obtained, which works great for blues and “Clean
leads”.
Clean:
Low gain for dirty cleans
The lowest gain range turns the preamp into a dirty clean channel with a very compressed character and
great sparkle. The tubey compression is ideal to bring a “clean” guitar to the front of the mix with lots
of sustain. Here, it’s easy to control the amount of overdrive by the pick attack while keeping the overall
level smooth.
VOLUME:
From clean to power amp overdrive
The overdrive distortion character of the amp is also set by the volume control, which overdrives the
output tubes. Here, the bass frequencies are broken into upper harmonics, which adds low order
harmonics that sounds darker and more rumbling than preamp distortion. Too much power amp
distortion will however break the bass apart and make the sound boxy with louder mids.