4 - Using the guitar amp

Guitar amp gain, equalization and output

Choosing the channel

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

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.

TASCAM GA-100CD 15