Tascam GA-30CD - Manual (Page 13)

2 – Part names and functions
TASCAM GA-30CD
1
The.GA-30CD.has.a.built-in.boost circuit for creating boost circuit for creating .circuit.for.creating.
distorted.sounds..Push.the. BOOST .switch.to.turn.this.
circuit.ON..The.indicator.to.the.left.of.the.switch.lights.
when.it.is.active.
When.the. BOOST .switch.is.OFF,.the.guitar.input.signal.
is.output.as.an.undistorted.sound.
The. GAIN .knob.always.adjusts.the.guitar.input.volume,.
but.when.the. BOOST .switch.is.ON,.this.knob.also.
adjusts.the.amount.of.distortion.
The. CENTER VOLUME .knob.adjusts.the.total.output.
volume.from.the.6.5-inch.center.speaker,.including.the.
output.of.both.the.guitar.amp.and.any.active.effect.
Adjust.the. BASS ,. MIDDLE .and. TREBLE .knobs.to.alter.
the.tone.quality.(frequency.characteristics).further.
NOTE
The CENTER VOLUME knob adjusts the overall
volume of the output signal sent to the center
speaker (6.5-inch). If an effect is used, it will be
output along with the guitar amp output.
The
BASS , MIDDLE and TREBLE knobs reduce the
levels of frequencies in specific ranges. At 10, a knob
does not cut its frequency band at all while at 0, it
cuts its band to the maximum effect.
Adjusting the volume and tone quality
1 Turn the CENTER VOLUME and SIDE VOLUME
knobs down to 0 (all the way to the left).
2 Connect a guitar.
3 Turn the
BASS , MIDDLE and TREBLE knobs to 10
(all the way to the right).
4 Turn the GAIN knob to the middle (pointing up).
5 Turn up the CENTER VOLUME gradually while
playing the guitar until you reach the desired
volume.
6 Shape the tone by adjusting the GAIN , BASS ,
MIDDLE and TREBLE knobs and turning the
BOOST switch ON or OFF.
7 Choose an effect (see “Selecting Effects and
setting Parameter” on page 14) and adjust the
three effect knobs to shape the tone further.
8 Adjust the CENTER VOLUME and SIDE VOLUME
knobs as necessary to achieve the volume balance
that you desire.
Of.course,.you.can.adjust.the.knobs.in.any.order.that.
you.like,.but.we.recommend.that.you.always.turn.the.
GAIN .and. VOLUME .knobs.down.before.starting.and.
before.connecting.a.guitar.
Procedures to shape the guitar tone
4 – Using the guitar amp