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2 – Part names and functions
TASCAM GA-30CD 13
The GA-30CD has a built-in boost circuit for creatingboost 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