Roland GR-20 Workshop Manual page 4

Working the GK- GUITAR/MIX/GK Switch
The three-way GUITAR/MIX/GK switch on the GK-3 allows you choose
between using the GR-20's sound alone, the guitar's sound alone, or mixing
the two. You can flip this switch at any time as you play. To:
•
hear only the GR-20 sounds—flip the switch to its GK position.
•
hear a mix of the GR-20's sound and the guitar's clean sound—flip the
switch to the middle, MIX position.
•
hear only the guitar's sound—flip the switch to the GUITAR position.
We'll discuss the GK-3's DOWN/S1 AND UP/S2 switches a bit later.
Adjusting Levels at the Guitar
While the GR-20 has its own overall output knob, you can also adjust the
level of the GR-20 sounds and your guitar sound from the GK-3 and the
guitar itself, whether you're using only GR-20 sounds, the guitar sound alone,
or both together.
To adjust:
•
the GR-20 sound level at the guitar—turn the large dial on the GK-3.
•
the clean guitar level at the guitar—use the guitar's own volume
controls.
Setting the GR-0 Sensitivity
Since every guitarist has a unique way of playing, it's important to set the
GR-20's sensitivity for your style and for the way your pickup's installed.
To set the GR-20's sensitivity:
Press the GK SIGNAL•SENS button so its indicator lights

Play a single open string—the string's number appears

at the left of the display, and its current sensitivity value
appears at the right. (Here, we've played the low E, or
sixth string, and its sensitivity value is 8.)
Turn the Number/Value dial so that all of the

BANK indicators above the SENS button light
briefly when you forcefully play the string.
Repeat Step 3 for your guitar's other strings.

Press SENS or EXIT—as the GR-20 stores your

settings, a dot in the lower-right corner of the
display flashes, and the BANK indicators light.
The current patch's number is displayed when
it's done.
Using the GR-0 Tuner
While the tuner is on, your guitar and all GR-20 sounds are silenced.
The GR-20's built-in tuner helps you easily tune your guitar—this is essential
for making sure the GR-20 understands the notes you play.
Press the TUNER button so its indicator lights.

Play an open string—the GR-20 displays its name. Here's

what note names look like on the GR-20 display. (A circle
to the right of a note indicates a sharp.)
If the string's tuned to the wrong pitch, adjust its tuning until the
correct note is displayed.
When SENS is lit, these
indicators act as a
Sensitivity meter.