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2 – Part names and functions
TASCAM GA-100CD 15
4 - Using the guitar amp
Choosing the channel
Guitar amp gain, equalization and output
The clean and overdrive channels have the same types
of control knobs.
Adjust the volume of each channel with its
GAIN and
VOLUME knobs. Use the MAIN MASTER VOLUME
knob to control the final volume output of the guitar
amp main speaker.
The
GAIN knob adjusts input gain, and the VOLUME
knob adjusts the channel output level. Raise the
gain to
increase distortion. Even a small amount of gain creates
distortion in the overdrive channel. Distortion does not
become audible in the clean channel until the gain is
raised significantly. With a single coil pickup guitar, for
example, distortion starts around 4.
Choose the overdrive channel to use distortion, and
adjust the
GAIN knob until you achieve the amount that
you desire.
Choose the clean channel and set the
GAIN knob low
for an undistorted sound.
Adjust the overall volume with the
VOLUME knob and
the
MAIN MASTER VOLUME knob. Adjusting these
knobs will not affect the tone quality.
Adjust the
BASS, MIDDLE and TREBLE knobs to alter
the tone quality (frequency characteristics) further.
NOTE
The MAIN MASTER VOLUME knob adjusts the
overall volume of the output signal sent to the
main speaker (12-inch). If an effect is used, it will be
output along with the guitar amp output.
The GA-100CD has independent clean and overdrive
channels. Use the
CLEAN/OVERDRIVE key to choose
the channel.
When the green light is ON, the
CLEAN section is
active and when the red light is ON the
OVERDRIVE
section is active .
You can also change the channel using a TASCAM
RC-30P or similar footswitch connected to the
GUITAR
CHANNEL footswitch jack on the rear panel.
Adjusting the volume and tone quality