Roland US-20 User Manual
INTRODUCTION
Thank you, and congratulations on your
choice of the Roland US-20 Unit Selector.
The US-20 is a Unit Selector that allows you to
connect two devices that feature a GK IN connector (such as GR Guitar Synthesizer, VG
V
•Guitar System, GI-10 Guitar-MIDI Interface,
etc.) and select to play whichever one you
want, or play both of them at the same time
using one guitar.
To ensure proper operation, and many years
of trouble-free service, please take the time to
read through this Owner’s Manual before
starting out.
IMPORTANT NOTES
Placement
• Do not subject the unit to temperature
extremes (eg., direct sunlight in an enclosed
vehicle). Avoid using or storing the unit in
dusty or humid areas, or areas that are subject
to high levels of vibration.
Maintenance
• For everyday cleaning wipe the unit with a
soft, dry cloth or one that has been slightly
dampened with water. To remove stubborn
dirt, use a mild, non-abrasive detergent.
Afterwards, be sure to wipe the unit thoroughly with a soft, dry cloth.
• Never use benzene, thinners, alcohol or solvents of any kind, to avoid the possibility of
discoloration and/or deformation.
Additional Precautions
• Protect the unit from strong impact.
Copyright © 1995 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form
without the written permission of ROLAND CORPORATION.
• Do not allow objects or liquids of any kind to
penetrate the unit. In the event of such an
occurrence, discontinue use immediately.
Contact qualified service personnel as soon as
possible.
• Should a malfunction occur, or if you suspect
there is a problem, discontinue use immediately. Contact qualified service personnel as soon
as possible.
CONTENTS
PANEL DESCRIPTIONS..........................................2
MAKING THE CONNECTIONS............................2
UNIT SELECTION....................................................3
Unit Selection with the [A/B] Pedal Switch..........3
Unit Selection with the [BOTH] Pedal Switch ......3
SPECIFICATIONS.....................................................3
Service Information...................................................4
PANEL DESCRIPTIONS
1. Unit Connectors
Here is where you connect units (such as those
in the GR series, VG series, or GI-10) capable of
being played with a divided pickup (GK-2A;
available separately). Use the 13-pin specialized cable (C-13D) supplied with the US-20.
UNIT A Connector
The unit connected to this connector can be
played when [A] has been selected with the
[A/B] pedal switch on the top panel.
UNIT B Connector
The unit connected to this connector can be
played when [B] has been selected with the
[A/B] pedal switch on the top panel.
2. GK IN Connector
Connect a divided pickup (GK-2A; available
separately) to this connector using the 13-pin
specialized cable (e.g., C-13A, C-13C, C-13D)
or the GK cable (GKC-3, GKC-5; available separately) supplied with your GR series synth or
other unit.
3. [A/B] Pedal Switch
This is the pedal switch that allows you to
select which device is to be played, either the
one connected to the UNIT A connector, or the
one connected to UNIT B.
4. [BOTH] Pedal Switch
When switched ON, this pedal allows you to
play both of the devices connected to the Unit
connectors at the same time.
MAKING
THE CONNECTIONS
After the GK-2A has been installed properly
on your guitar, make the connections as shown
below. For details on how to set up the GK2A, please read the GK-2A’s owner’s manual.
* Make sure that all the units are switched off before
making connections. If you make connections
without switching off the units, speakers or other
units may be damaged.
* Be sure to use only the supplied cables (e.g., C-
13A, C-13C, C-13D) or the GK cables (GKC-3,
GKC-5; available separately). Using any other
cables can cause problems. Also, make sure that
the combined length of the cable run, stretching
from the GK-2A through the US-20 to Unit A (or
B), does not exceed 10 meters. For this reason, the
C-13B (10 m) and the GKC-10 (10 m) cable cannot
be used, because it is too long for proper operation.
* Power to the US-20 is supplied by the unit con-
nected to the UNIT A connector, through the 13pin specialized cable. The power to the GK-2A is
also supplied from UNIT A, via the US-20.
Therefore, if you connect a device only to the UNIT
B connector, neither the US-20 nor the GK-2A will
work. To use only one device, connect it to the
UNIT A connector.
2
3 4
1
Guitar with GK-2A
US-20
GR series
VG series
2
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